L502X modded bioses download (GPU voltages and more!)

[capitankasar]

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

I think this is the first modded ever bios for this laptop model, not sure anyway.

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.

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.

-------------------------------------------
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 ricohunter and me
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 nomygod and me
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 me
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 me ^_^
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 me 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: EB677F3D8BEFC12AD1FDF8B971D5BFD0
BIOS version used: A10
this bios mod has been tested by me,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: 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!

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 and oburger.
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 and alade.
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

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

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.

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.

if you are using my modded bios, leave feedback plz

I have also plans to replace the splash logo in future versions
and maybe rework at the setup utility by adding functionalities in the future.

special thanks to: jkbuha , AHMED HOSSAM , 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 A10 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 example:

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

[funky monk]

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.

[MPIXAPP]

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 ).

[MPIXAPP]

Originally Posted by funky monk

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.

[capitankasar]

thank you all ^_^

Originally Posted by MPIXAPP

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.

[MPIXAPP]

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.

[capitankasar]

Originally Posted by MPIXAPP

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)

[sevenofnine]

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!

[capitankasar]

Originally Posted by sevenofnine

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

[MPIXAPP]

Coordinate the topic and add the part of the custom voltages