Acer Predator G5 modding

Discussion in 'Acer' started by DRevan, Jan 6, 2019.

  1. DRevan

    DRevan Notebook Virtuoso

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    Update
    Found the vBIOS!
    It is NOT stored in the system bios, it is on a separate Macronix MX25U4033E chip!
    Default TDP is 78W and with OC maximum graphics score I was able to get was 12200 points in Fire Strike.
    I have modded the vBIOS from 78W to 110W, now the max points have increased to 13561 ! Not bad compared to the factory default 11400 :)

    3DMark result: https://www.3dmark.com/3dm/32790660?

    Was a bit tricky to flash the modded vBIOS.
    An RT809F SPI programmer gave validation error when reading the factory vBIOS.
    Then we tried an TL866CS which was able to read and save the vBIOS to an 512 kb ROM file.

    However when writing the modded vBIOS (256 kb file saved with nvflash) the TL866CS gave write error.
    However RT809F was able to write and verify it.

    tl;dr: for saving an TL866CS was needed, for writing a RT809F :D

    ps: The new TDP after vBIOS mod (after running 1 Fire Strike test):

    [​IMG]

    TDP is a bit higher than the default 78W :D
     
    Last edited: Jan 29, 2019
    Megol and downloads like this.
  2. Ahaja

    Ahaja Newbie

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    Hi everyone,

    I am sorry for resurrecting this old thread, but I would like to say thanks to DRevan for this wonderful breakdown of his G5 modding efforts. Recently I had to replace RAM on my own G5 and the process gave me some insight into the inner workings of this model. it seems that the differences between G5 and G9 are forced by Acer ie. backpanel lighting, subwoofer, single M.2 slot etc. I have found another curiosity on the G5 motherboard while I was replacing my RAM, there is a free slim-SATA port (usually used by cd/dvd drives) found on the left of the M.2 slot and there is a strange mounting rack on the back cover where the dvd is supposed to be (the side cover can be removed by removing two small screws in the middle). I have tried with a HDD caddy, and while everything matches the access is blocked by two columns. I have ordered slim-SATA male to SATA female cable online and I'll post an update when I try it.

    PS. There are two unused ports nearby, I would appreciate any information about these ports.

    [​IMG]
     
  3. Megol

    Megol Notebook Evangelist

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    The one close to the SATA port looks like something for power delivery as it have wide traces, perhaps for powering a storage device?
     
  4. Ahaja

    Ahaja Newbie

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    I got my answers on Acer Support Forum,
    The left one is SATA port used by my regular SSD, I didn't realize it was the one that connects to tray in the easy access panel. The right one is a debug port used to display system error codes (bios post) but I did't find any hardware that can be used to read it. As for slim SATA port it produces 5v instead of 12v of power, which is enough to power a 2.5" SSD but not enough to power regular 3.5" HDD, besides that there should be no differences.
     
  5. veisen

    veisen Newbie

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    Hello

    can you share your unlocked 1.14 bios please i have spi programmer but i can not find unlocked rom

    Br
     
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