820-00165-a 2015 - no serial

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  • magneh
    Badcaps Veteran
    • Apr 2014
    • 588
    • Portugal

    #1

    820-00165-a 2015 - no serial

    Hello guys

    Got this original dump from a 820-00165-A 2015 with no serial
    Everything seems to work fine, except theres no SN

    I tried to look for the "ssn" string but in this dump only one result and its not the Serial string

    It has Big Sur on the SSD, so I suppose something changed on this firmware version
    Anyone knows where to insert the serial?

    SN:CPWS37FDH3QD

    Heres the dump, in case someone has some minutes to help
    Thanks!
    Attached Files
  • DanielDacko
    Badcaps Veteran
    • Mar 2015
    • 325
    • Macedonia

    #2
    Re: 820-00165-a 2015 - no serial

    Try this.
    Attached Files
    I don't provide help for people using CH341A and a clip.

    Comment

    • magneh
      Badcaps Veteran
      • Apr 2014
      • 588
      • Portugal

      #3
      Re: 820-00165-a 2015 - no serial

      thanks but even without trying it, I can check that the file checksum is invalid

      will try to fix it tomorrow and test the file anyways

      Nobody knows where the ssn string is in the original file?
      Last edited by magneh; 12-08-2021, 05:57 PM.

      Comment

      • magneh
        Badcaps Veteran
        • Apr 2014
        • 588
        • Portugal

        #4
        Re: 820-00165-a 2015 - no serial

        Originally posted by DanielDacko
        Try this.
        Works after correcting checksum, but its in Chinese

        Comment

        • reformatt
          Badcaps Legend
          • Feb 2020
          • 1400
          • Australia

          #5
          Re: 820-00165-a 2015 - no serial

          Your entire Fsys block is missing/corrupt. Try this one, it's from a 2015 dump with clean ME, SSN updated and checksum corrected. I don't recall what FW revision it is though, so you may need to run the Big Sur installer through to update it.
          Attached Files
          Last edited by reformatt; 12-09-2021, 05:54 AM.

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