[Problem/ Request] Bricked TongFang GK7MRFR BIOS

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • cr4zychriss
    Padawan
    • Nov 2025
    • 1
    • United Kingdom
    #1

    [Problem/ Request] Bricked TongFang GK7MRFR BIOS

    Hello everyone,
    I am requesting urgent assistance to unbrick my laptop, a rebranded TongFang GK7MRFR chassis. The laptop is completely dead following a faulty in-OS EC flash attempt.
    I have successfully used a CH341A programmer and can read/write/verify both flash chips, but using my backups/extractions has failed to restore power. The root cause is likely a corrupted Intel Management Engine (ME) region or an incompatible EC/BIOS pairing. System & Hardware Details
    • Barebone / Chassis: TongFang GK7MRFR
    • MB: MB: GK5MP5X V1.0 Prod :GK5MRFV10T04201310281
    • Rebrand: PC Specialist Optimus Series / XMG Core 17 (E20)
    • CPU: Intel Core i7-10750H (10th Gen)
    • GPU: NVIDIA GeForce GTX 1650 Ti
    • RAM: 32GB DDR4
    Identified Flash Chips (Both 3.3V Confirmed)
    1. Main BIOS Chip (16MB): Winbond 25Q128JVSQ (BIOS)
    2. EC Flash Chip (1MB): GigaDevice GD25LQ80 (EC firmware)
    Timeline of Failure & Prior Issues

    The core issue before the brick was an erratic keyboard backlight that often remained off and did not respond to FN+F5/F6/F7 or Control Centre commands, nor later under linux (Confirmed as a fiddly EC issue).
    1. Originally ran BIOS N.1.03 stock, then couple years back updated to 1.04 from XMG/Schenker and everything was fine here (cant remember what files I used as lost the drive they where stored) .
    2. Asked PCS for a bios update in march last year and they sent over 2 files (1.06 Bios + 1.19 EC), after flashing under efi, noticed the keyboard backlight acting weird and mostly stayed off.
    3. Flashed XMG BIOS N.1.05. BIOS version changed to N.1.05, but EC remained 1.19.
    4. The Brick: Attempted to extract and flash a 64KB EC part from an old 1.04 file using dd and from the EFI shell flashed it with ifux64.efi .
    5. The flash completed, but after an EC reset, the laptop went COMPLETELY DEAD (no power LED, no charge indicator, no fans, no POST). Later realised the initial 64KB extraction/flash was faulty and corrupted the EC boot sequence.
    Current Recovery Status (CH341A Attempts)

    I have successfully performed the following steps using flashrom, but the system remains dead:
    1. Main BIOS Chip: Flashed my full working backup: bios_backup_GK7MRFR_N106.bin – Last working dump before updating to N1.05 verified working, 100% OK.
    2. EC Flash Chip: Flashed a newly extracted EC image from the XMG 1.05 ROM (EC_1MB_Extract.bin) to the EC chip. Unknown condition, file uploaded for verification.
    3. Conclusion: I strongly suspect the the EC provided by PCS wasn’t 100% fit and or Intel ME Region within my original 1.06 backup was compromised, or the 1.06 ME is incompatible with the 1.05 EC firmware, leading to a failure in the power-on handshake.
    Request for Files & Guidance

    I kindly ask the community for assistance with the following:
    1. Full SPI Dump: A complete dump from a working GK7MRFR system (any BIOS version, with a clean, configured Intel Management Engine (ME) region.
      If possible, and if i’m not asking for much a full unlocked SPI dump or assistance with modding/unlocking the BIOS after the restore would be greatly appreciated, as the locked nature may be hindering full recovery.
    2. Clean EC Firmware: The full EC firmware file (lastly installed was EC 1.19 but could be any vers as long as its paired with the BIOS) for the GD25LQ80 chip.
    Guidance Needed: Please advise on the flashing order (EC or Main BIOS first if this actually matters?!?) and confirm which file should go to which chip.

    Files I Am Uploading for Analysis


    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • inck243
      Acer e15-e5-576g-5762 bricked. Bios chip won't interface in AsProgrammer.
      by inck243
      Thanks for any help. The board version is DAZAARMB6E0 REV: E. The bios chip is winbond 25Q64JVSIQ1736. W25Q64JV is not available in AsProgrammer -- only BV CV FV or FW_1.8c. The chip won't interface with asProgrammer and a CH341A. When I have this chip on the board, the laptop will not post but when I plug it in to power, the blue LED lights up, also the orange when the battery is connected. When I push the power on button, keyboard backlight turns on and the fan starts briefely then turns off. But I can't do anything to program this bios chip so I bought another one.

      The BIOS...
      07-25-2024, 09:17 AM
    • testaccgta
      Unable to verify IC or write/erase/flash BIOS file to XMC QH128AHIG SPI chip using NeoProgrammer/AsProgrammer
      by testaccgta
      Hi, everyone!

      I've recently acquired two brand new SPI chips to replace the one currently in my Acer A514-54G laptop MB (FH5AT LA-K092P). The reason why I'm replacing the current SPI chip is because I had some difficulties with a third-party IT assistant who pretty much lacked the soldering skills and ended up destroying the current SPI chip soldered to my MB from factory.

      I've decided to do this on my own because I spent the past month or so learning some soldering skills and BIOS modding through Badcaps and WinRaid forums, hence the attempt. I've also chosen to buy...
      09-01-2024, 08:24 PM
    • BMCappelletti
      Asus Chromebox CN62 - wrong chip put on BIOS reader
      by BMCappelletti
      Long story short:
      - dad converted Asus Chromebox CN62 into Windows compatible, with mrchromebox BIOS, years and years ago
      - gave the computer to his son a couple years later
      - son now decided to revert it to Chrome OS, to sell it as original (re-writing BIOS with the backup one created by his dad)
      - too lazy to remove the board from the case, thought a voltage regulator was the BIOS chip (you know... it has 8 legs)
      (seems like the story was not that short)

      He used alligator clips to read the chip. No luck reading it. Removed chip and placed on a SOC-8...
      01-08-2025, 07:27 PM
    • thxd43
      Lenovo laptop does not turn on, what does this number mean in a BIOS chip?
      by thxd43
      Hello, first of all, excuse me, I am using the translator, English is not my native language.

      I have a Lenovo ideapad 330S - 14IKB laptop.



      The tablet did not recognize me when I connected it, so I checked the device manager and I realized that there were many with the exclamation mark, so one by one I began to update their drivers until the sign disappeared of admiration, I even updated the BIOS, and the laptop rebooted normally and worked, so far so good, but the tablet still did not recognize me, I read on the internet that it could be due to a...
      02-23-2023, 08:37 PM
    • Azurain
      Elitebook 840 G5 Bios Chip Soldering Question
      by Azurain
      Hi everyone,

      I have an HP Elitebook 840 G5 that I am trying to get working again. I've removed the front bios chip (the 32mb one) and have run it through HP unlocker already. I've uploaded and verified the new bin, but am now experiencing an issue that has led me to believe I've been soldering the chip back to the motherboard incorrectly.

      Essentially, after re-soldering the chip back into its place and reassembling the laptop, the charging light immediately flashes orange and white and then shifts to a solid white. The capslock and numlock lights blink seven times...
      04-14-2023, 06:58 PM
    • Loading...
    • No more items.
    Working...