Corrupted/Interrupted Bios Update Lenovo Legion S7 15ACH6

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  • Thomas Dunlap
    New Member
    • Feb 2024
    • 6
    • United States
    #1

    Corrupted/Interrupted Bios Update Lenovo Legion S7 15ACH6

    Hello,

    I have a Lenovo Legion S7 15ACH6 that was interrupted during a BIOS update and is now bricked. Symptoms: fans spin, RGB keyboard lights up, but no display/POST.

    The BIOS chip is a Gigadevice GD25LR128. I’m using a CH341A with a 1.8 V adapter. In AsProgrammer I selected GD25Q128 (since GD25LR128 isn’t listed) and successfully made a dump (BiosDump2_pf3eg12j.rar).

    My understanding is that I’ll need a known good BIOS dump for this exact model, ideally matched to my laptop’s serial number (PF3EG12J), and that the Windows license key/serial should also be preserved.

    Can anyone guide me through the proper process of rebuilding or flashing the BIOS for this machine?

    Thanks in advance!
    Attached Files
    Tags: None
    • m1ch43lzm
      Badcaps Veteran
      • Mar 2019
      • 686
      • Peru
      #2
      BIOS extracted from Lenovo website, DMI inserted (serial/win key)

      Legion S7-15ACH6 Laptop (Lenovo) - Type 82K8
      S/N PF3EG12J
      MTM 82K80083US
      BIOS ver. HACN46WW
      DMI 62B000-62CFFF


      Attached Files

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