ThinkPad T480s BIOS Repair/Request

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  • pyra
    New Member
    • Mar 2025
    • 5
    • United States

    #1

    ThinkPad T480s BIOS Repair/Request

    Hey!

    I have a ThinkPad T480s, type 20L7-0026US, and it has the musical code for 0285: "TCG-compliant functionality-related error." After some research, it seems the BIOS could be corrupted and at fault. If my attached BIOS could be repaired, or someone could drop a good working BIOS, I'd appreciate it!
    Attached Files
  • Stefan Steff
    Badcaps Veteran
    • Mar 2024
    • 311
    • Romania

    #2
    Originally posted by pyra
    Hey!

    I have a ThinkPad T480s, type 20L7-0026US, and it has the musical code for 0285: "TCG-compliant functionality-related error." After some research, it seems the BIOS could be corrupted and at fault. If my attached BIOS could be repaired, or someone could drop a good working BIOS, I'd appreciate it!

    Why You don't post your serial number as per rules...(like S/N : PC148LC3)
    Did You have tried to remove SVP with autopatcher?

    Comment

    • pyra
      New Member
      • Mar 2025
      • 5
      • United States

      #3
      Originally posted by Stefan Steff


      Why You don't post your serial number as per rules...(like S/N : PC148LC3)
      Did You have tried to remove SVP with autopatcher?
      Sorry about that.

      S/N: PC148LC3
      Motherboard FRU: 02HL854

      I did, even though there should be no supervisor password. It rendered the machine completely unresponsive.

      Comment

      • hoaca388
        Badcaps
        • Jan 2022
        • 12178
        • Socialist Republic of Vietnam

        #4
        Originally posted by pyra

        Sorry about that.

        S/N: PC148LC3
        Motherboard FRU: 02HL854

        I did, even though there should be no supervisor password. It rendered the machine completely unresponsive.
        T480s Laptop (ThinkPad) - Type 20L7


        Attached Files


        Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
        https://www.badcaps.net/donate

        Comment

        • pyra
          New Member
          • Mar 2025
          • 5
          • United States

          #5
          Originally posted by hoaca388

          T480s Laptop (ThinkPad) - Type 20L7


          The file successfully flashed, but the system refuses to turn on still. The power button blinks 3 times when connected to AC, but does nothing when pressed. No lights on the keyboard, etc. I suspect there is damage elsewhere on the board, and I'm not too sure where to start looking!

          Interestingly enough, the system behaves slightly differently when the BIOS is erased (using flashrom --erase), with an orange AC light, a lit up ESC, and a lit up power button which go away shortly after. When the BIOS is flashed again, the behavior returns to no power.

          Comment

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