Lenovo L14 gen1 BIOS unknown supervisor pwd

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  • neluka
    New Member
    • Dec 2024
    • 1
    • Poland
    #1

    Lenovo L14 gen1 BIOS unknown supervisor pwd

    Hi All,

    I have looked through this forum before and found plenty of useful information. My problem unfortunately still persists.

    What I have tried:
    - grounding the pin during startup to get into bios - tried around 50 times as per guideline and video but to no effect.

    I would like to get a dump of this bios to look through it and patch it, but I am unsure which programmer to use and how to connect it. This is a TQFP so soldering is off the table.

    Could you recommend any programmer and link a guide so I can get BIOS dumped?

    Thanks in advance!
    Tags: None
    • Stefan Steff
      Badcaps Veteran
      • Mar 2024
      • 222
      • Romania
      #2
      Originally posted by neluka
      Hi All,

      I have looked through this forum before and found plenty of useful information. My problem unfortunately still persists.

      What I have tried:
      - grounding the pin during startup to get into bios - tried around 50 times as per guideline and video but to no effect.

      I would like to get a dump of this bios to look through it and patch it, but I am unsure which programmer to use and how to connect it. This is a TQFP so soldering is off the table.

      Could you recommend any programmer and link a guide so I can get BIOS dumped?

      Thanks in advance!
      Supervisor password has nothing to do with BIOS chip.
      It's stored in SIO NPCE68XX 256kb.
      This can be read/write with SVOD4 or Vertyanov and looks like this attached dump.
      Good Luck!
      Attached Files

        Comment

        • myhamor
          New Member
          • Aug 2021
          • 4
          • Ukraine
          #3
          Attached Files​
          Thanks dear, working one.

            Comment

            • Ghost18_07
              Zakaria
              • Mar 2018
              • 73
              • Algeria
              #4
              Originally posted by Stefan Steff

              Supervisor password has nothing to do with BIOS chip.
              It's stored in SIO NPCE68XX 256kb.
              This can be read/write with SVOD4 or Vertyanov and looks like this attached dump.
              Good Luck!
              Thanks , works for me with both SVOD4 and Vertyanov .

              For SVOD 4 : you should put SPI speed to 3 Mhz and the battery pluged in to work correctly, the size is 256Kb .

                Comment

                • Mahesa09
                  Senior Member
                  • Nov 2021
                  • 63
                  • jakarta
                  #5
                  can you write the steps because i always fail to read via svod4

                    Comment

                    • Ghost18_07
                      Zakaria
                      • Mar 2018
                      • 73
                      • Algeria
                      #6
                      Originally posted by Mahesa09
                      can you write the steps because i always fail to read via svod4
                      Well, as i said, the trick is to change the SPI speed to 3hz, and don't remove the battery and the 3V battery, to stop the laptop from turning ON when pluging the adapter. after that you can read and write the EC slowly but garanteed.

                        Comment

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