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Lenovo Yoga AIO 7-27ACH6 bios

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  • AustinCER
    Senior Member
    • Apr 2025
    • 50
    • United States

    #1

    Lenovo Yoga AIO 7-27ACH6 bios

    Had the same issue with a Yoga AIO 7-27ACH6 - Type F0G7. Fully powers on and no display. Was able to successfully flash clean BIOS to ensure it was a BIOS issue. Device is back to fully operating and POSTing.
    Serial Number: YJ01ECXB

    However since it was a clean BIOS, Machine Type and Serial number are invalid. Wondering if someone could successfully preserve that data for me into a BIOS flash .bin. I will include the matching BIOS dumps along with the .bin i used to successfully flash the BIOS. Much appreciated in advance.
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  • volinakis
    Badcaps Legend
    • Jan 2021
    • 3265
    • N/A

    #2
    Originally posted by AustinCER
    Had the same issue with a Yoga AIO 7-27ACH6 - Type F0G7. Fully powers on and no display. Was able to successfully flash clean BIOS to ensure it was a BIOS issue. Device is back to fully operating and POSTing.
    Serial Number: YJ01ECXB

    However since it was a clean BIOS, Machine Type and Serial number are invalid. Wondering if someone could successfully preserve that data for me into a BIOS flash .bin. I will include the matching BIOS dumps along with the .bin i used to successfully flash the BIOS. Much appreciated in advance.
    try
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    • AustinCER
      Senior Member
      • Apr 2025
      • 50
      • United States

      #3
      Originally posted by volinakis

      try
      Tried flashing but did not work. Assumed it wouldnt because I am getting a verification error. Something I did not run into with the Clean BIOS.
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      • volinakis
        volinakis commented
        Editing a comment
        I only put your DMI into your bios, problem is with programmer.
    • m1ch43lzm
      Super Moderator
      • Mar 2019
      • 3008
      • Peru

      #4
      The issue you have is when programming the chip, it has nothing to do with the file
      Check your connection, are you using a clip/pogo pin adapter? Maybe it lost connection when writing, Try again, erase -> program -> verify
      Also use 1.8V adapter with CH341A

      Comment

      • AustinCER
        Senior Member
        • Apr 2025
        • 50
        • United States

        #5
        Originally posted by m1ch43lzm
        The issue you have is when programming the chip, it has nothing to do with the file
        Check your connection, are you using a clip/pogo pin adapter? Maybe it lost connection when writing, Try again, erase -> program -> verify
        Also use 1.8V adapter with CH341A
        Thanks for the input. I am using the clip. I just went ahead and re-flashed the BIOS with the clean US BIOS and verified the flash and did not run into any errors. Can confirm I am doing everything correct. I have successfully flashed the the clean BIOS 3 separate times with each successfully posting.

        Comment

        • m1ch43lzm
          Super Moderator
          • Mar 2019
          • 3008
          • Peru

          #6
          Now try again with volinakis' file, the verification error you get is on a different address than the DMI area, as I said before, it's most likely a connection issue with your programmer/clip

          DMI 5C7000-5D6FFF

          Comment

          • AustinCER
            Senior Member
            • Apr 2025
            • 50
            • United States

            #7
            Can't thank you guys enough. True legends.
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