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    Default L502X modded bioses download (GPU voltages and more!)

    hi all, probably some of you noticed about the project started some time ago.



    more info at this topic

    Modding the L502X bios (The project)

    and finally after some research and the help of other members, I was finally able to relase the first modded bios for the L502X

    here you can download currently modded bioses for your XPS 15 R2 (L502X)

    note: some users using lower voltage moded bioses reported it fixed the crashes with the stock bios/clocks

    the default voltages running with the stock dell BIOS are:

    for gt525m
    2D profile: 0.85v
    3D profile: 0.95v
    for gt540m
    2D profile: 0.83v
    3D profile: 0.98v
    please note that 2D profile is asigned to iddle or low graphic needed task, like surfing, watch videos, very low demanding graphics games like NES emulators ..
    and 3D profile is used for high graphics demanding apps, like most games.

    following modded bioses include voltage changes for OC or cooler temps, choose the propper one for your needs.

    remember to use the version for your card only, i mean to dont download 525m versions for 540m boards or 540m versions for 525m boards, if you flash the incorrect version you can find problems or get no voltage changes at all.

    note: those modded bioses doesnt touch frecuency or clocks,they still running stock clocks, so if you are interested in overclocking/underclocking use software like MSI afterburner 2.10 after flash the modded bioses like I did

    msi afterburner screenshot



    note: all following bioses has been tested by me and/or other forum members without major problem, anyway I dont get responsable of any bad flashes occuring by acidental AC/battery power lose, currupt downloads caused by unstable internet connections,flashing on another laptops or unsuported hardware and stuff like that, those bios are ONLY for the XPS 15 R2 (model number: L502X)

    note: Common mistakes
    some people get confused with underclock,undervolt,overclock and overvolt, take in mind those are different concepts.

    I will explain them a little to clear any doubt.


    Underclock: this lower the GPU clock speeds, such as core or memory, it decrease performance as the proccesing speed is lower, but it can help to prevent some crashes happening at the system.

    Overclock: this raise the GPU clock speeds, such as core or memory, it increases performance as the proccesing speed is higher, this usually result in higher FPS at the games, really usefull if you want better speed at the games, however when you overclock too much, the system can become unstable and crash, if that happen, you will need to decrease the clocks a little until it get stable again.

    Undervolt: this lower the voltages, resulting in cooler temperatures.
    as it has been discused here, it seems also fix some crashes for some users and it also increase overclocking stability sometimes.

    however really low voltages can also make your card unstable, this usually happens at the 540m with 0.83v/0.83v since the 0.83v is usually too low when performing intensive tasks (0.85v works fine in most cases), however it seems to work fine for the 525m wich seems to handle properly the lower 0.83v voltage.


    Overvolt: this raise the voltages, resulting in higher temperatures, this also usually reduce the system life.
    however it increase overclocking stability in some cases.
    also if the temps go very far, your system can be damaged, that isnt very usual but still happening ^_^
    anyway most modern machines have systems that prevent that, so when the system get at certain temperatures, it automatically shutdown or reboot.
    it you want to lower the temperatures even more while using the modded BIOSes.

    here is a list of hardware mods you can do:

    * repaste (dell's thermal paste job isn't as good as desired)
    * remove Dust filter (by removing the dust filter, the airflow will be greatly improved)

    here you have some usefull links about how to dissasembly the unit.

    L502X disasembly video
    L502X teardown guide + repaste





    if you want to check/verify the downloaded bios integrity is correct, you can use checksum apps like Md5Check to verify the RAR package integrity,if the posted checksum code and the checksum code obtained by the tool are identical,your download has been sucessfull, in most of cases, this process is unnecesary, however since bios flashing is not funny stuff, it help to prevent problems.

    -------------------------------------------
    older versions download
    Click on the Spoiler button to access older downloads
    Spoiler :

    only for gt525m card users

    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: C5F92A1CF2072F1898491A5576C303AA
    BIOS version used: A07
    this bios mod has been tested by capitankasar and ricohunter.
    2D PROFILE: 0.83v
    3D PROFILE: 0.98v
    notes: increased V for overclocking in game, but also save power/heat on 2d profile by using lower V
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 9B76F36859531DA1127281CBB377040D
    BIOS version used: A07
    this bios mod has been tested by capitankasar and nomygod.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: save power/heat on idle, and in also game, this mod reduce GPU heat while in game
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: C494DA787BD5849B74C16978F8648B6C
    BIOS version used: A07
    this bios mod has been tested by capitankasar
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: if the previus 0.83v bios for the 2d profile is unstable, use this one instead.
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 8F2AF65FD399EC295404E8B55202B3E3
    BIOS version used: A09
    this bios mod has been tested by buch3r,FL5,dhaneshbc and capitankasar ^_^
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: this is the new undervolted A09 BIOS version for gt525m users (Recomended)
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 776D7FAF96277BA995675045EFE20C4F
    BIOS version used: A09
    this bios mod has been tested by ricohunter
    2D PROFILE: 0.85v
    3D PROFILE: 0.98v
    notes: this is the new overvolted A09 BIOS version for gt525m users
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: A4613928A7BC7282FB032011D7D52BAC
    BIOS version used: A09
    this bios mod has been tested by daryld1988, Jovica666 and capitankasar with awsome results.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: A09 BIOS for the GT525M card with the lowest voltage avalible for both profiles, chances it become unstable are high, however if your card can handle it, power consumition and temps will be the lowest,and it may improve OC in some cases,not recomended for most users, but may work great for another ones
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: BCCC91D1F2977CD40B7D9242CE60B314
    BIOS version used: A09
    this bios mod has been tested by capitankasar
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: A09 BIOS for the GT525M card low voltages for 2d and 3d, should work nice for low temps and OC
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: EB677F3D8BEFC12AD1FDF8B971D5BFD0
    BIOS version used: A10
    this bios mod has been tested by capitankasar,daryld1988,wendiko and alvester.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: new A10 BIOS for the GT525M card with the lowest voltage avalible for both profiles, chances it become unstable are high, however if your card can handle it, power consumition and temps will be the lowest,and it may improve OC in some cases,not recomended for most users, but may work great for another ones
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 45EA74F69B130A92CCCE3F74103F47D1
    BIOS version used: A10
    this bios mod has not been tested yet, please, give feedback!
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: A10 BIOS for the GT525M card low voltages for 2d and 3d, should work nice for low temps and OC
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: F05F9294A9C54F9180BBF780BC41FE92
    BIOS version used: A10
    this bios mod has been tested by Jovica666,kgh00007 and Tazzle.
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: this is the new undervolted A10 BIOS version for gt525m users, it should be stable for most people
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: DBBA58543FB17070E86410446B0B7FC7
    BIOS version used: A10
    this bios mod has been tested by daryld1988 and daniel2512
    2D PROFILE: 0.85v
    3D PROFILE: 0.98v
    notes: this is the new overvolted A10 BIOS version for gt525m users, may be usefull for Overclocking, beware the extra Heat and power consumition!
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 571D21AE4E5CC9B55C6E9CA51A77027A
    BIOS version used: A11
    this bios mod has been tested by alvester,daryld1988,Rackers and wendiko.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: this is the new undervolted A11 BIOS version for gt525m with lowest voltages avalible, should be usefull for minimal heat and power consumition!
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 1F92F5CD47D056762945C50E45439617
    BIOS version used: A11
    this bios mod has been tested by daryld1988,Phonemes and dxluong.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: undervolted A11 BIOS version for gt525m , low heat and also should also be able of some OC!
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 8619C1D128644F4A41770CAC287049DB
    BIOS version used: A11
    this bios mod has been tested by capitankasar jdunne and alvester.
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: undervolted A11 BIOS version for gt525m , should be nice heat reduction and probably nice too for OC !
    GT525m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: D866CAA1E5129DB5DAAD68A3BD859683
    BIOS version used: A11
    this bios mod has been tested by ricohunter
    2D PROFILE: 0.85v
    3D PROFILE: 0.98v
    notes: this is the new overvolted A11 BIOS version for gt525m with highest voltages avalible, should be usefull for OC, beware the extre heat!


    only for gt540m card users


    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 36E7DD928632479D5B066E059B821BF0
    BIOS version used: A07
    This bios mod has been tested by Matix5
    2D PROFILE: 0.83v
    3D PROFILE: 1V
    notes: increased 1V on 3D profile,should be good for OC (beware the extra heat!)
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 2AB84FFF952F1E24F95BB6C98E7CC395
    BIOS version used: A07
    this bios mod has been tested by Matix5
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: this is a nice undervolted bios, this should reduce temps while ingame, also fixed some crashes for some users
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 3C8EA4113AF36830E173B48E1A359D71
    BIOS version used: A09
    this bios mod has been tested by rabbitz,sujinge9,FlipBack,squallmx,sevenofnine,knaff,micmax,airstev,Matix5,quaaak,squallmx,Hunter13040,daver160,oburger and carlmike2007.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: this is the first undervolted A09 BIOS for the 540m users, fixed many GPU crashes for some users (Recomended!)
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 159E16618F618A4A7AAB9DE7AAAC4C05
    BIOS version used: A09
    This bios mod has been tested by Cyb3rfr3ak,Matix5 and ximinez
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: really undervolted A09 BIOS for the 540m users,generated heat will be minimal, and it may improve OC in some cases, however it may not be stable for all users
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 14A31C87F7AFED337D54040DF06D527F
    BIOS version used: A09
    This bios mod has been tested by Savior
    2D PROFILE: 0.83v
    3D PROFILE: 1V
    notes: Overvolted A09 BIOS for the 540m users,generated heat will increase a little over the stock bios, however it may improve OC in some cases
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 2EDFCDC770055E5F11282B6304108B5F
    BIOS version used: A10
    this bios mod has been tested by Matix5,sevenofnine,jiannichan,squallmx,knaff,gilipollas,daver160,Hunter13040,Aurum,Izno,huharain,alade,kaanyr,masoud_ata and carlmike2007.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: this is the first undervolted A10 BIOS for the 540m users, may fix many GPU crashes for some users and will decrease temps a lot (Recomended!)
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 565BF92CD2424227629EEE2C9B55BC4C
    BIOS version used: A10
    This bios mod has been tested by ZXRaziel
    2D PROFILE: 0.83v
    3D PROFILE: 1V
    notes: New Overvolted A10 BIOS for the 540m users,generated heat will increase a little over the stock bios, however it may improve OC in some cases
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 483191FDA9FFBCACCEECC92455D11184
    BIOS version used: A10
    This bios mod has been tested by squallmx,cookiebrandt,JuntheKing and Hunter13040.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: really undervolted A10 BIOS for the 540m users,generated heat will be minimal, and it may improve OC in some cases, however it may not be stable for all users
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 692BBE9FBFDF2B34634CCF86C6140EC7
    BIOS version used: A11
    this bios mod is pending to test! feedback plz ^_^
    2D PROFILE: 0.83v
    3D PROFILE: 1V
    notes: Overvolted A11 BIOS version for gt540m , should be nice for OC , beware the extra heat!
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: F829B7DA8EE939CE80A460B8900FF292
    BIOS version used: A11
    this bios mod has been tested by cookiebrandt
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: undervolted A11 BIOS version for gt540m , minimal voltage,heat and power consumition, however this bios is well known to be unstable while gamming, not recomended
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 24B61A771C5A7DEE80501562561857A9
    BIOS version used: A11
    this bios mod has been tested by ximinez,Matrix5,carlmike2007,SemperEgor,sweetnsour,FlipBack,TehCapi and jingtai1993.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: undervolted A11 BIOS version for gt540m , minimal heat and should also be able of some OC, this bios also fixed crashes in previus versions (recomended)
    GT540m bios mod for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: B88FB590733179CA5E3BE1253EEDBA86
    BIOS version used: A11
    this bios mod has been tested by jingtai1993
    2D PROFILE: 0.85v
    3D PROFILE: 1V
    notes: Overvolted A11 BIOS version for gt540m , should be nice for OC , the 2D voltage is also tweaked, may fix GPU crashes while exit from game to desktop (fast voltage switches), beware the extra heat!



    Advanced versions


    note: advanced bios versions contain extra features not present in default bios like extra menus and advanced options,those bioses still being under testing due the high ammount of changes, only flash this if you know what are you doing!

    note: advanced bios versions will be uploaded only by user request!, if you want a advanced bios for an specified bios version and or GPU model with custom voltages not present below, please request it in this format:

    example
    Code:
    Bios version: A12
    GPU: gt525m
    desired 2d voltage: 0.83v
    desired 3d voltage: 0.85v
    Advanced versions download

    Custom A06 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 411EA90715CFB91DFE525D7DD6EE82CA
    BIOS version used: A06
    this bios mod has been tested by zulqar
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A06 BIOS for gt540m with a nice set of extra options, handle the new options carefully!
    Custom A06 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: E6B828F99266A2A29F66CA68861A93A1
    BIOS version used: A06
    this bios mod has been tested by Doixdd
    2D PROFILE: 0.85v
    3D PROFILE: 1V
    notes: voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom A06 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 779EC55FE653F4F3C76DA1C1ADABD291
    BIOS version used: A06
    this bios mod has been tested by adeebm
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A06 BIOS for gt525m with a nice set of extra options, handle the new options carefully!
    Custom A09 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire ///MIRROR by ximinez
    MD5 checksum: 087864199541B6C99AE82C65860DEC00
    BIOS version used: A09
    this bios mod has been tested by Savior
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A09 BIOS for gt540m with a nice set of extra options, handle the new options carefully!
    Custom A10 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 65409A8FACA79E8DB805416F870A49F9
    BIOS version used: A10
    this bios mod has been tested by dhaneshbc
    2D PROFILE: 0.85v
    3D PROFILE: 0.98v
    notes: voltage modded A10 BIOS for gt525m with a nice set of extra options, handle the new options carefully!
    generic A11 bios mod (non gpu voltage modded) with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 13DE57E8DB17687729CD83C4AA25992D
    BIOS version used: A11
    this bios mod has been tested by swatkxs ,willerson ,Bressum and DSKEAARSR 2013.
    2D PROFILE: default
    3D PROFILE: default
    notes: non voltage modded A11 BIOS with a nice set of extra options, handle the new options carefully!
    Custom A11 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: A01235EFF83940E59EA8E556F1E3AE8D
    BIOS version used: A11
    this bios mod has been tested by gabroveca,airstev, francy.1095 and sweetnsour.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A11 BIOS for gt540m with a nice set of extra options, handle the new options carefully!
    Custom A11 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: B7EB26251A5337B1FF47F1393AE23780
    BIOS version used: A11
    this bios mod has been tested by striker_lt and fauzulkc
    2D PROFILE: 0.85v
    3D PROFILE: 1V
    notes: voltage modded A11 BIOS for gt540m with a nice set of extra options, handle the new options carefully!
    Custom A11 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: E6D8B245B3D9055AB7E2F0B06DF8F310
    BIOS version used: A11
    this bios mod has been tested by dhaneshbc and Tazzle and muuus
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A11 BIOS for gt525m with a nice set of extra options, handle the new options carefully!
    Custom A11 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 106DF0E4D5585A32D5868BE47A6B4081
    BIOS version used: A11
    this bios mod has been tested by dhaneshbc and daryld1988
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: voltage modded A11 BIOS for gt525m with a nice set of extra options, handle the new options carefully!
    Custom A11 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 778EECA1E2DCACD0A7E73CE22AE16EDC
    BIOS version used: A11
    this bios mod has been tested by no tested yet
    2D PROFILE: 0.83v
    3D PROFILE: 0.98v
    notes: voltage modded A11 BIOS for gt525m with a nice set of extra options, handle the new options carefully!
    Custom generic A12 bios mod with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 879341576A42F707F60393D324B46604
    BIOS version used: A12
    this bios mod has been tested by adeebm
    2D PROFILE: default
    3D PROFILE: default
    notes: Non voltage modded A12 BIOS with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 979ADFAD2F0EBE0CD93D63E908790CB0
    BIOS version used: A12
    this bios mod has been tested by wendiko ,daryld1988 and crapula.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 467D4BFF9878A02D6FF2161A14279995
    BIOS version used: A12
    this bios mod has been tested by crapula
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 30D09C3EB19831555F8AE50ECCA59637
    BIOS version used: A12
    this bios mod has been tested by capitankasar
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 871A0B8E4B2DA10C8C64ECF26F0BE31B
    BIOS version used: A12
    this bios mod has been tested by capitankasar,crapula and alvester.
    2D PROFILE: 0.80v
    3D PROFILE: 0.80v
    notes: Minimal voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 57DB15BFA3A4CB56C8DB42AD17149D61
    BIOS version used: A12
    this bios mod has been tested by crapula and Kai Dowin.
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: Minimal voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 1D4ED0D9BEC0002B908738D068F2FC64
    BIOS version used: A12
    this bios mod has been tested by pending to be tested!
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 8EA0EDBED7F1A1FDC571AA41D9D5EAF6
    BIOS version used: A12
    this bios mod has been tested by capitankasar
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: DA79B0AA216534D9D4E5E9CBC4F967C7
    BIOS version used: A12
    this bios mod has been tested by crapula,carr251 and SwooshyCueb
    2D PROFILE: 0.83v
    3D PROFILE: 0.87v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    note2: carr251 reported hand and freezing issues while coping data using this version.
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: C69D454202486396C7D26052B1ADFF23
    BIOS version used: A12
    this bios mod has been tested by overvu and crapula
    2D PROFILE: 0.83v
    3D PROFILE: 0.90v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 1A3430CDB34FCD5DBBEED6CCCA8A15DE
    BIOS version used: A12
    this bios mod has been tested by Mang0
    2D PROFILE: 0.83v
    3D PROFILE: 0.98v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: D429F1E970BC0101551FFE25ED2E92D5
    BIOS version used: A12
    this bios mod has been tested by Pending to be tested!
    2D PROFILE: 0.80v
    3D PROFILE: 0.98v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: F666B19DFE87A75B6433246478815BA4
    BIOS version used: A12
    this bios mod has been tested by smsmasters
    2D PROFILE: 0.85v
    3D PROFILE: 1V
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 9226200558677A43B6B9A73344185508
    BIOS version used: A12
    this bios mod has been tested by Pending to be tested!
    2D PROFILE: 0.80v
    3D PROFILE: 1V
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom no voltage moded A12 bios mod with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: A1F9D23508A2B96C88413C11BC71DDBF
    BIOS version used: A12
    this bios mod has been tested by agalin and festering leper.
    2D PROFILE: default
    3D PROFILE: default
    notes: non voltage modded A12 BIOS with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 7576D85506C5447F3BCB565999287C3F
    BIOS version used: A12
    this bios mod has been tested by TehCapi,francy.1095,Matrix5,guessyet and sign0ff.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: B3AD1EEEB7E2A2D85F3BA14A1BCA810A
    BIOS version used: A12
    this bios mod has been tested by Kitsunemimi,fauzulkc and MakeYouRage.
    2D PROFILE: 0.80v
    3D PROFILE: 0.90v
    notes: voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 2DFC63022D4DE49AE5101173787A8EFD
    BIOS version used: A12
    this bios mod has been tested by francy.1095
    2D PROFILE: 0.80v
    3D PROFILE: 0.85v
    notes: voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 022D368DE178C92DF012CFD3143AE49B
    BIOS version used: A12
    this bios mod has been tested by Doixdd shrikant, zulqar, abhizok, NeoMesal, daver160, dakhan89, victorluan,gilipollas,FlipBack,felipeap92 and thenriques45.
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!Recomended!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 31D62706626543F8D76706A95F05FBE9
    BIOS version used: A12
    this bios mod has been tested by fauzulkc
    2D PROFILE: 0.85v
    3D PROFILE: 0.95v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 4A4215FB25C4FCEDD6F64037B77792B3
    BIOS version used: A12
    this bios mod has been tested by guessyet and NovaTornado
    2D PROFILE: 0.83v
    3D PROFILE: 0.92v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: B38B1080871149573216CB57AD0556E4
    BIOS version used: A12
    this bios mod has been tested by agalin
    2D PROFILE: 0.80v
    3D PROFILE: 0.87v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 636CBA20F91EE3BB5C1359EAB93D5AB9
    BIOS version used: A12
    this bios mod has been tested by cookiebrandt
    2D PROFILE: 0.80v
    3D PROFILE: 0.83v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 1C0F2D423874024A5C9662F8D77653A2
    BIOS version used: A12
    this bios mod has been tested by striker_lt
    2D PROFILE: 0.83v
    3D PROFILE: 1v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 0FBF01A21B544BBE168B1C6DBA8E19F8
    BIOS version used: A12
    this bios mod has been tested by NovaTornado
    2D PROFILE: 0.83v
    3D PROFILE: 0.90v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!
    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: F2A5CAB15B493ED84756B2DDDE947457
    BIOS version used: A12
    this bios mod has been tested by fai2523
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137 and sleep FIX for OSX, handle the new options carefully!


    Advanced bios versions download


    note: advanced bios versions contain extra features not present in default bios like extra menus and advanced options,
    keep in mind many of those bioses still being under testing due the high ammount of changes!





    Non voltage moded A12 bios mod with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: D632733550C7F89A6421DA92EA9E2855
    mod version: version 6
    BIOS version used: A12
    this bios mod has been tested by Not tested yet
    notes: Stock Voltage A12 BIOS with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137, sleep FIX for OSX,computrace unlock ,serial tag changer and RAID, handle the new options carefully!

    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 8EBCC5A47E4877EAEA8B31C4D078BEE8
    mod version: version 6
    BIOS version used: A12
    this bios mod has been tested by kasar
    2D PROFILE: 0.85v
    3D PROFILE: 0.85v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137, sleep FIX for OSX,computrace unlock ,serial tag changer and RAID, handle the new options carefully!Recomended for GT525M users!

    Custom voltage moded A12 bios mod for gt525m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: E51F48C886297ED384173FDA311E2489
    mod version: version 6
    BIOS version used: A12
    this bios mod has been tested by Not tested yet
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: Voltage modded A12 BIOS for gt525m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137, sleep FIX for OSX,computrace unlock ,serial tag changer and RAID, handle the new options carefully!

    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: A0DAB7E7FB91BA9E2CD64C3E76D048F3
    mod version: version 6
    BIOS version used: A12
    this bios mod has been tested by guessyet
    2D PROFILE: 0.83v
    3D PROFILE: 0.85v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137, sleep FIX for OSX,computrace unlock ,serial tag changer and RAID, handle the new options carefully!Recomended for GT540M users!

    Custom voltage moded A12 bios mod for gt540m with advanced menus for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 904BFC852EC3C2C7813A3B8CC523A3A3
    mod version: version 6
    BIOS version used: A12
    this bios mod has been tested by agalin
    2D PROFILE: 0.83v
    3D PROFILE: 0.83v
    notes: Voltage modded A12 BIOS for gt540m with a nice set of extra options,plus native speedstep and updated CPU microcode,intel vbios update to v2137, sleep FIX for OSX,computrace unlock ,serial tag changer and RAID, handle the new options carefully!

    Intel ME firmware update


    Info: this update is independent from BIOS update, it doesnt matter what BIOS version u have, including non modded ones, this update update the stock intel Management Engine to the latest version, I didnt found a update package with the previous version, so as for the moment is not posible to downgrade again to the previous version, proceed carefully!

    Intel ME firmware update for L502X DOWNLOAD from mediafire /// MIRROR by ximinez
    MD5 checksum: 868A6D2E1947ACD50A1D79295F2CC504
    Intel ME FW version: 7.1.52.1176
    notes: Intel ME firmware update tested on L502X, stock Intel ME firmware for L502X is 7.0.4.1197.
    to update the ME FW, start update_Intel_ME.bat file, and then restart the machine to run the new FW
    this update has been proved as stable and the overclocking patch is tested on this version.
    Intel ME firmware update for L502X DOWNLOAD from megaupload link provided by SwooshyCueb
    Intel ME FW version: 7.1.60.1193
    notes: newer Intel ME firmware update for L502X, stock Intel ME firmware for L502X is 7.0.4.1197.
    to update the ME FW, start update_Intel_ME.bat file, and then restart the machine to run the new FW , note, I didnt tested this one by myself, SwooshyCueb did and had good results, however this may not be compatible with the previous overclocking Intel ME patch I relased for the machine.


    -------------------------------------------

    users marked as green color are the brave ones who tested the bios when no one tested it before.


    reduced voltages help to reduce heat and power consumition, but can be unstable with very high clocks in most cases.

    high voltages are more stable with higher clocks usually (not allways), but also take more power and heat.


    I didnt made any changes at the clock or memory speed since every chip have different tolerances. so I suggest you download MSI afterburner 2.10 or any other overclocking software for the gpu and get the desired overclock for your card.

    to monitorize the voltage,use nvidiainspector cause MSI afterburner works fine for everything else like temperatures, gpu and shaderprocessor and vmemory clocks, but dont monitorize gt525m or gt540m voltages (yet)


    how to flash it:
    just download the desired file, if you want to verify the checksum, use Md5Check and compare with the one posted with your desired download file. (the md5 checksum has been applied over the *.rar file)

    once you ensured the file is OK,then extract it with winrar, and run the
    FLASH_the_modded_bios.bat file.

    a cmd window prompt will be opened

    ask 'y' when it ask for it and then hit ENTER key,then you will have to confirm two dialog messages from winplash.


    then let the system restart and DONT TOUCH ANYTHING, if everything goes nice, the new bios will be start getting flashed after the reboot.


    NEVER INTERRUPT THIS PROCESS or the chances your laptop will become an useless brick will be about 99%

    to confirm that you are using the new bios, just enter at the setup utility, you should see the bios tittle has been changed.



    In this case I was testing a 525m bios mod.

    and finally monitorize the desired voltages with nvidiainspector



    In this case I got a 0.98v mod running on a gt525m.

    note: some users reported unacurrate voltage data reading with nvidia inspector, consider using HWmonitor as alternative to get propper voltage reading, credits to wendiko.

    note: dont use the overclocking tab of nvidia inspector!, some users reported voltage issues after messing with that, if you want to OC the card, use msi afterburner, evga precission or another software, but not nvidia inspector!

    remember you will get the iddle voltage by dont using any graphics app, and you will get the 3D/game voltage by alt+tabbing from the game or running it in a window.


    advanced menus

    if you are using the advanced bioses,
    some of the recomended options are:

    quick boot -> on (boot directly to OS)
    diagnostic splash screen -> on (bye bye to dell logo and hi to devices info ^^)
    uefi boot -> on
    fast strings -> on (performance boost)

    and adjust the memory frecuency to the max your memory and cpu support ^^
    1600 mhz should be great if your memory modules can handle it

    here are some pictures of the advanced menus, however the extra features are too big to take pictures of all of them ^_^




















    note: installing windows 7 or 8 with UEFI option enabled may cause issues like crashes while using the BIOS controlled hotkeys such as brightness, keyboard, wiki etc, this has been reported by NeoMesal and agalin, extra info here

    BIOS RECOVERY


    bricked your bios acidentally by a bad flash? flashed wrong bios file and your L502X doesnt boot anymore?

    dont worry, you can get your precious machine back to life

    I made a custom CD-rom image, I think this is a must have for l502x users, specially for those ones messing with the bios updates from this topic

    features are:

    * no usb sticks are needed anymore!, just a CD ^^
    * all needed stuff to flash/restore/repair the bios, included little OS, and apps is included at the cdrom image.
    * easy procedure ^^

    how it works?

    by pressing the end key while plugging the power plug, the laptop looks for a file named BIOS.cap from the CD image, then it load the temporal bios to the memory and run it from there, then , by using this pack, it load a small windows xp with the flashing apps.

    the cdrom image contains:

    - BIOS.cap file, this file is the backup/temporal bios used to boot the system temporally.
    - bootable BARTpe with small windows xp, required to flash the BIOS
    - winflash with the A06 BIOS original/non modded version plus some scripts to make everything easier at the recovery process

    preparation

    * get a working PC with internet ,cd burner, burning software to burn ISO file and a emty cdrom.
    * download the package
    download from mediafire
    download from ximenez's site
    download from 4shared (mirror by NovaTornado)
    download from rapidshare (mirror by NovaTornado)
    download from zippyshare (mirror by NovaTornado)
    download from MEGA (mirror by NovaTornado)

    * extract it from the RAR archive, then burn the ISO to a CD.
    * put the CDrom at the bricked l502x optical drive and turn the machine off.

    procedure.

    1- turn off your bricked L502X laptop and put the recovery cdrom inside the optical drive.
    2- unplug the power cord, and press end button.
    3- plug the power cable, and then you relase the end button fast. (the machine should start automatically without push the power button)
    4- the bios start reading the cdrom, it load BIOS.cap file from the cdrom.
    5- you have to hit F12 fast when the dell splash screen is at the screen, it will bring the device boot menu, then select cdrom. (if you didnt hit f12 in time, you will have to power off the machine and repeat the whole procedure again)
    6- bartpe - windows xp will start being loaded.
    7- when you are at the main screen, click NO on the network message box. then click the GO button and click "Command Prompt(CMD)" open a cmd prompt. and type "repair" without the quotes, that will launch my main script (Dont close the CMD window, it still needed to reboot the system.)
    8- follow the script instructions, it is a little modified script from my main custom bioses.
    9- since the automatic reboot didnt worked for the winflash in that boot cd, my script will do it, just wait after the winflash window is closed and the system will autorestart.
    10- black screen for some seconds and the flashing screen will appear , if the flashing procedure ends correctly, your BIOS should be working back ^^ (this recovery method installs A06 stock BIOS)

    note: I noticed I was unable to get this working by conecting the cdrom via the Esata port, so I had to remove the second hdd caddy I installed and plugged the dvd-rom drive in its original location, then it worked like a charm

    if you preffer images rather than a guide, there you go

















    PLEASE, if this recovery method helped you, plz, let me know.thank you ^^

    and if you are using my modded bioses, leave feedback too plz

    special thanks and credits to: jkbuha , AHMED HOSSAM ,TimeWalker ,Kapax7 and all the people who helped me and/or followed the topic giving me hopes to acomplish this



    for now I will relase the bioses by request (only for L502X bioses A11 version wich is the latest one)
    just request the mods with following format

    (posible values for 525m card: 0.83v,0.85v,0.95v,0.98v)
    (posible values for 540m card: 0.83v,0.85v,0.98v,1V)

    2D PROFILE desired voltage: *custom volts*
    3D PROFILE desired voltage: *custom volts*
    card model: (GT525M or GT540M)



    request examples:

    2D PROFILE desired voltage: 0.83v
    3D PROFILE desired voltage: 0.98v
    card model: GT525M


    2D PROFILE desired voltage: 0.85v
    3D PROFILE desired voltage: 1V
    card model: GT540M

    More Advanced mods

    warning: following mods involve hardware modding of the unit, and require at least basic electronic knowledge, if you cant meet those requirements dont proceed and keep using the non hardware mods from this topic (modded bioses)

    following mods allow to:

    * unlock descriptor settings (all locked flash contents will be now accesible from software including a powerfull app named FPT wich is able to read and write the whole chip without the need of a external hardware programmer)
    * enable overclocking
    * backup , mod and restore the whole machine flash contents (Descriptor, ME, BIOS and hardware settings of the machine)
    * ability to mod further the unit, for example, this is required to enable general overclocking.
    * unbrick full bricked L502X machines that my recovery CDrom cannot recover.
    * remove password (still need to figure how to do it..)
    * reset anti-thieft feature setting (still need to figure how to do it..)
    * change permanently the serial number and other unique hardware ids ...etc


    procedure

    1 - buy or build a chip programmer (schematics to build a cheap/easy but functional one is included at this topic)
    2 - take appart the whole laptop and remove the bios chip
    3 - optional - install sockets on motherboard and programmer side, make everything easy and higly recomended if you are going to make more than 1 flash.


    equipment needed:


    * 2 x SOIC 8 SMD ZIFF Sockets one is used for the programmer, and other will be installed at the motherboard where the old bios was.
    * some extra compatible BIOS chips for testing and replacement if something goes wrong with the other ones, or just for faster tasks (programing and using at the same time)
    * 1 homemade programmer, you will need , 1 x male parallel port, 4 x 100 ohm resistors, 1 x battery holder for the battery, and the battery itself (3.3v), you will obiusly also need some wires for the connections and a soldering iron, and you can use optionally a board to connect it and give it a better looking
    * soldering tools and skills

    here is the schematic, I didnt used the capacitor on mine and it worked fine anyway ^^



    if previous diagram didnt worked for you to detect and read your SPI chip, try with following one



    here you can see my v1 and v2 programers, first one didnt included the socket, thats why my chip got fried/damaged after several soldering/desolderings

    v1



    v2


    comparision



    BIOS chip and location at the l502x motherboard


    it is a Winbond 25Q32BVSIG wich bave a 4 Mb storage size

    to remove the original chip from the motherboard I suggest using a small sewing pin.

    then use it to leverage to lift each leg meanwhile you apply heat with the soldering iron (dont lift the leg too much or it will break, and dont apply heat during a lot of time, or the chip will get damaged like the first one I had after several solderings and desolderings)

    it will need to be removed so you can install the socket instead for easy chip swaping ^^



    (ignore the yellow and blue wires at the motherboard from last pic, they are from another mod )

    take in mind the chip have a big dot in a corner, that indicate the correct position, connecting the chip in a incorrect position will cause damage to the chip and maybe to the other hardware such as programer or motherboard.

    remove a small plastic square at the cover under the palmrest is needed/recomendable if you are going to install the socket, you can see how I modded the plastic at the case on previous images to let the new socket fit.

    here you have aditional images






    well, as for the software I used , SPIPGM and FLASHROM

    you will need to make a DOS bootable USB stick, and copy this package I used to a folder inside your bootable usb device.

    yes, it need to be an usb device because you will need to dump your chip image first before doing anything,

    backing up the chip before it got damaged is basically what saved my machine

    you will also need a PC with parallel port for this, preferably a desktop PC


    to test your programer hardware and chip conections and to identify the chip, do

    Code:
    SPIPGM.EXE -i
    to backup your bios, do

    Code:
    SPIPGM.EXE -d backup.rom
    to verify/compare your bios from a file

    Code:
    SPIPGM.EXE -v file.rom

    to flash and program the chip

    Code:
    flashrom.exe -p rayer_spi -w FILE_TO_FLASH.ROM

    the chip image is 4096 kb , it contains descriptor, BIOS , ME, and other stuff such.


    at this point, you should be able to backup your chip image.

    however, you will need to mod it.

    get a hex editor, and look for this HEX string

    00 00 0B 0A 00 00 0D 0C 18 01 08

    and change it to

    00 00 FF FF 00 00 FF FF 18 01 08

    then save the file.

    this will unlock the descriptor

    once you get the descriptor patched and flashed back at the chip, put the chip back into the motherboard with the socket or solder it directly if you dont have sockets installed.

    if your machine boot without issues, you can continue and proceed to enable OC.

    to enable Overclocking do following.

    * if you didnt installed the ME update from this topic, do it and reboot the computer (this is needed because I made the patch for the latest version of the ME, It can cause issues with older versions)
    * now , download this file L502X_OVERCLOCKING_PATCH_BY_CAPITANKASAR.rar
    * extract the package and Run L502X_ME_PATCH.bat file, that will use my modded ME settings image to patch your ME firmware.


    now:

    * open a cmd window and type :
    bcdedit /set useplatformclock true
    note, if you use winxp, that will not work, you will need to edit boot.ini instead and add /usepmtimer to the active entry.
    * reboot
    * download and install XTU-Setup 3.1.201.5.msi
    * make changes at the BCLK going over 105 mhz may cause inestabilities or crashes, you will need to find your propper OC
    * download WinTimerTester 1.1
    * run wintimer tester for 2 or 3 minutes until the time ratio is 1.0000

    have fun



    note: if after doing all the steps, you did not gain BCLK slider on intel XTU software do following:
    * reflash your favorite modded A12 bios
    * reflash the 7.1.52.1176 intel ME update from this post
    * flash the overclocking patch
    * reset the bios SETUP configs to default settings and save
    * reboot the machine and enter XTU again.
    * if you gain overclocking, you can go again to bios setup and set your configs again.

    Descriptor Securiy Override

    this will allow to bypass descriptor security without the need of a homemade programmer and remove bios chip, however, if you brick the laptop by FPTW flashing, you will still the programmer to bring it back to life

    the procedure is pretty easy, just locate this realtek chip and bridge pins 1 and 5



    after doing this mod, make sure you make a dump/backup of your entire chip with FPTW before flash anything, and save that backup in a safe place outside your laptop, because if things goes wrong while flashing, you will need that dump plus a programmer to get your laptop back into working status.

    this mod should fully unlock FPTW and other software functionality to access your whole chip and flash mods like the ME patch wich enable overclocking

    Cooling system Improvements

    the system temperature have a big impact on system stability and durability, this means a good cooling system will let your system perform better and also will handle better overclockings.
    for that reason, improving the cooling system or at least keep it efective will be good.

    Dust filters removal

    take appart the whole unit, and remove all those dust filter stickers, there are some of them at the expansion door, howver the most important one is under the system Fan, vy remove that, the airflow will be greatly improved




    Add heatsinks to the voltage regulators and repaste

    the voltage regulators feed the system parts with the voltages they need.

    however they can get very hot.





    thanks chris89 for providing such usefull info

    extra info and original post

    feedback and how to videos thanks to thenriques45

    L502X modded bioses download (GPU voltages and more!)


    Fan Management

    this laptop just have one fan, for that reason it is really important to keep it working properly and at the correct speeds to keep the system stable and cool.


    1 - download this file RwPortableX64V1.6.5.zip
    2 - Run RW.exe
    3 - focus Embedded Controller
    4 - Double Click at the 0x60 register (the one from the picture)



    by default it is on 40 (auto)

    values:

    40 - auto
    02 - 100% (5284 RPM)
    00 - manual mode? (some people claim the can use fan software to control it with this mode on another laptops)


    dont forget to close RWE after make changes,because RWE is constantly polling data from EC and creating lag.

    more info about the fan and RWE. here

    update

    Timewalker Developed an app to control the fan wich works with our L502X machine




    you can find the details here
    Last edited by capitankasar; Yesterday at 08:33 AM.
    L502X,overclocked and undervolted GT525m, also the whole system is OCed, minidisplay to vga adapter, 2 HDD caddy,
    replaced thermal paste, removed dust filter to improve airflow, internal usb mod and modded BIOS & ME firmware, BIOS socket installed too.
    [MOD] Custom voltage modded L502X bioses + Unlocked menus + ME update + Overclocking
    [GUIDE] Setting up the L502X GPS
    [GUIDE] L502X Internal USB mod

    .

  2. #2
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    I would give a disclaimer about the voltages, 0.83v might not work for some people if they're unlucky, and with bios it's not just a simple reboot if it doesn't work.
    Dell Studio XPS 16:
    Intel Core2 Duo P8600
    1080p RGBLED
    HD3670
    500GB 7200rpm
    4GB DDR3 RAM
    ...you get the idea, read another SXPS16 owners sig and that's pretty much what I have

  3. #3
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Great work dude

    EDIT : I just want to add that you should make an undervolted version , this is will be called overvolted since you've overvolt it from 0.95 to 0.98v , this will add about 4~5C to load temps and reduce idle temps as well ( Due to the 0.83v ).
    Current : Dell Inspiron N5110 / Intel Core i7-2630QM - NVIDIA GeForce GT 525M - 4GB DDR3 1333MHz.

    Next purchase : Intel Broadwell / NVIDIA Maxwell.

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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Quote Originally Posted by funky monk View Post
    I would give a disclaimer about the voltages, 0.83v might not work for some people if they're unlucky, and with bios it's not just a simple reboot if it doesn't work.
    If anything goes wrong , Intel GPU will takeover.
    0.83v will work with 2D clocks I guarantee.
    Current : Dell Inspiron N5110 / Intel Core i7-2630QM - NVIDIA GeForce GT 525M - 4GB DDR3 1333MHz.

    Next purchase : Intel Broadwell / NVIDIA Maxwell.

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    Default Re: L502X modded bioses download (GPU voltages and more!)

    thank you all ^_^

    Quote Originally Posted by MPIXAPP View Post
    Great work dude

    EDIT : I just want to add that you should make an undervolted version , this is will be called overvolted since you've overvolt it from 0.95 to 0.98v , this will add about 4~5C to load temps and reduce idle temps as well ( Due to the 0.83v ).
    well, my intention was to make a all in one version, reduced voltage when not using the true card potential to reduce the heat and battey drain, and in the other hand overvolt the card when it get demanded by higher overclock.

    this mod is like

    2D profile: minimal heat/battery drain <->3D MAXIMUM stability performance while overclocking


    however if you want I relase a version with custom voltages, just tell me wich ones you want for the 2D and 3D profiles.
    Last edited by capitankasar; 30th December 2011 at 10:15 PM.
    L502X,overclocked and undervolted GT525m, also the whole system is OCed, minidisplay to vga adapter, 2 HDD caddy,
    replaced thermal paste, removed dust filter to improve airflow, internal usb mod and modded BIOS & ME firmware, BIOS socket installed too.
    [MOD] Custom voltage modded L502X bioses + Unlocked menus + ME update + Overclocking
    [GUIDE] Setting up the L502X GPS
    [GUIDE] L502X Internal USB mod

    .

  6. #6
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    I don't own a L502x , But I'm really impressed by your work
    N5110 is stable with 3D clocks undervolted to 0.86v and GT525M overclocked to 672/1344/900!!

    Some people want to reduce load temps.
    Current : Dell Inspiron N5110 / Intel Core i7-2630QM - NVIDIA GeForce GT 525M - 4GB DDR3 1333MHz.

    Next purchase : Intel Broadwell / NVIDIA Maxwell.

  7. #7
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Quote Originally Posted by MPIXAPP View Post
    I don't own a L502x , But I'm really impressed by your work
    N5110 is stable with 3D clocks undervolted to 0.86v and GT525M overclocked to 672/1344/900!!

    Some people want to reduce load temps.
    thanks :3
    ah ok :P (though you wanted one)

    @all

    I think I will relase the bioses by request for now (only for L502X bios), just ask them with following format

    2D PROFILE desired voltage: (posible values: 0.83v,0.85v,0.95v,0.98v)
    3D PROFILE desired voltage: (posible values: 0.83v,0.85v,0.95v,0.98v)
    card model: (GT525M or GT540M)

    note, I Cant fully test the mods for the GT540m, so I apologize if the GT540m mod dont work as expected, anyway like MPIXAPP said, you should still be able to use the intel card in case something dont work with the modified nvidia vbios)
    Last edited by capitankasar; 30th December 2011 at 10:16 PM.
    L502X,overclocked and undervolted GT525m, also the whole system is OCed, minidisplay to vga adapter, 2 HDD caddy,
    replaced thermal paste, removed dust filter to improve airflow, internal usb mod and modded BIOS & ME firmware, BIOS socket installed too.
    [MOD] Custom voltage modded L502X bioses + Unlocked menus + ME update + Overclocking
    [GUIDE] Setting up the L502X GPS
    [GUIDE] L502X Internal USB mod

    .

  8. #8
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Great job! Was really enjoying your original bios mod thread! If you've got time to develop one for the 540 that would be super! I'd love my 502 540 to run a bit cooler...but no pressure, Stirling job already!

    Have you done anything to modify fan profile etc?

    TY!

  9. #9
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Quote Originally Posted by sevenofnine View Post
    Great job! Was really enjoying your original bios mod thread! If you've got time to develop one for the 540 that would be super! I'd love my 502 540 to run a bit cooler...but no pressure, Stirling job already!

    Have you done anything to modify fan profile etc?

    TY!
    thank you ^_^

    well, for the moment I just know how to edit the voltages for the cards,dont know how to edit the fan yet, I think I will focus next on doing the splash image mod, but need to investigate on it first.

    also, I noticed the L502X uses the same heatsink and FAN for the CPU and GPU, so I dont think it will be a good idea.

    anyway I can tweak the voltages for you if you want ^_^, just tell me the values in the form I posted on last post
    Last edited by capitankasar; 22nd January 2012 at 03:14 PM.
    L502X,overclocked and undervolted GT525m, also the whole system is OCed, minidisplay to vga adapter, 2 HDD caddy,
    replaced thermal paste, removed dust filter to improve airflow, internal usb mod and modded BIOS & ME firmware, BIOS socket installed too.
    [MOD] Custom voltage modded L502X bioses + Unlocked menus + ME update + Overclocking
    [GUIDE] Setting up the L502X GPS
    [GUIDE] L502X Internal USB mod

    .

  10. #10
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    Default Re: L502X modded bioses download (GPU voltages and more!)

    Coordinate the topic and add the part of the custom voltages
    Current : Dell Inspiron N5110 / Intel Core i7-2630QM - NVIDIA GeForce GT 525M - 4GB DDR3 1333MHz.

    Next purchase : Intel Broadwell / NVIDIA Maxwell.

 

 
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