Clean ME Region of ThinkPad T14 Gen2 (Intel - 20W0 20W1)

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  • Spelwe
    New Member
    • Aug 2024
    • 5
    • IT
    #1

    Clean ME Region of ThinkPad T14 Gen2 (Intel - 20W0 20W1)

    Good morning found few posts on the subject.
    I am facing a "problem", I don't know if you can help me or not, but I would like to give it a try.

    I am trying to download the ThinkPad T14 Gen2 bios for ME cleaning.
    I tried a black CH341A (modded) with NeoProgrammer, using Winbond 25Q256JV and 25Q256FV settings even though a 25R256JVEN is installed on the board. (I used those two for compatibility reasons)

    I got 2 .bin files (for the same chip), but both have problems reading by ME Analyzer v1.307.0 r351 on the EFS partition and problems decompiling with Flash Image Tool. (via NeoProgrammer, the "verify" check was successful).

    Have you ever had a similar problem?
    I also notice that compared to other users, I get a dump of 32mb and not 16, could this be normal?

    I post below two dumps in an archive.
    Attached Files
    Tags: None
    • Answer selected by Spelwe at 08-23-2024, 12:50 AM.
      hoaca388
      Badcaps
      • Jan 2022
      • 12237
      • Socialist Republic of Vietnam
      Originally posted by Spelwe
      PF-3J4KZJ
      In many post i saw for serial number request, why this information is important?
      T14 Gen 2 Laptop (ThinkPad) - Type 20W1

      ​
      Attached Files
        • Selected Answer

        Comment

        • volinakis
          Badcaps Legend
          • Jan 2021
          • 2864
          • N/A
          #2
          Originally posted by Spelwe
          Good morning found few posts on the subject.
          I am facing a "problem", I don't know if you can help me or not, but I would like to give it a try.

          I am trying to download the ThinkPad T14 Gen2 bios for ME cleaning.
          I tried a black CH341A (modded) with NeoProgrammer, using Winbond 25Q256JV and 25Q256FV settings even though a 25R256JVEN is installed on the board. (I used those two for compatibility reasons)

          I got 2 .bin files (for the same chip), but both have problems reading by ME Analyzer v1.307.0 r351 on the EFS partition and problems decompiling with Flash Image Tool. (via NeoProgrammer, the "verify" check was successful).

          Have you ever had a similar problem?
          I also notice that compared to other users, I get a dump of 32mb and not 16, could this be normal?

          I post below two dumps in an archive.
          serial number?
          ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
          https://www.badcaps.net/donate/
          ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

            Comment

            • Spelwe
              New Member
              • Aug 2024
              • 5
              • IT
              #3
              PF-3J4KZJ
              In many post i saw for serial number request, why this information is important?

                Comment

                • hoaca388
                  Badcaps
                  • Jan 2022
                  • 12237
                  • Socialist Republic of Vietnam
                  #4
                  Originally posted by Spelwe
                  PF-3J4KZJ
                  In many post i saw for serial number request, why this information is important?
                  T14 Gen 2 Laptop (ThinkPad) - Type 20W1

                  ​
                  Attached Files
                  ↵
                  Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
                  ​https://www.badcaps.net/donate
                    • Selected Answer

                    Comment

                    • Spelwe
                      New Member
                      • Aug 2024
                      • 5
                      • IT
                      #5
                      Trying to flash via flashrom, I get
                      Code:
                      Reading the contents of the old flash chip... executed.
[1] 2049 segmentation fault sudo flashrom -p ch341a_spi -c W25Q256FV -w cleared.bin
                      A segmentation fault is generated with each attempt.

                      Even if I try
                      Code:
                      --ifd -i bios --noverify-all
                      to operate only with ME, or
                      Code:
                      --wp-disable
                      to disable hardware protections, or
                      Code:
                      --force
                      to force write operations I always get the same error.

                      Granted that this forum is not FlashRom support, and that maybe I will open an issue on github, I wonder if you have ever had the same problem.

                      Could it be related to what I said in the first post about the EFS partition seeming to be corrupted? (Even from a new dump made by flashrom, and then read with MEA, I get the usual result)

                      Code:
                      flashrom 1.4.0 on Darwin 22.6.0 (x86_64)
flashrom is free software, get the source code at https://flashrom.org
                      .

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