Macbook A1466 - Bios trouble

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  • Eleways
    Senior Member
    • Oct 2014
    • 62
    • Italy
    #1

    Macbook A1466 - Bios trouble

    Hi there

    I've a problem with some Macbook air 13" (and an Apple A1502 too).

    After replaced the bios, the notebook start very slow. The loading bar starts and goes to the end, but it gets stuck at the end.

    the bios is taken from another identical motherboard with the same part number 820-00165-a

    same problem with an Apple Macbook pro 13 (A1502) and with an Apple Macbook Air 11 A1465.

    I'm going crazy, plase help me!
    Tags: None
    • SMDFlea
      Super Moderator
      • Jan 2018
      • 22279
      • UK
      #2
      Re: Macbook A1466 - Bios trouble

      If you take the bios from another machine then you must clean the ME firmware,change the serial and alter the fsys checksum.

      Clean ME region - https://www.youtube.com/watch?v=exfG5Iywmjk
      Edit serial number - https://www.youtube.com/watch?v=poA8HByYqTM

      Older ME firmwares - https://www.badcaps.net/forum/showthread.php?t=83137
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        • Askic
          Senior Member
          • Sep 2018
          • 187
          • BIH
          #3
          Re: Macbook A1466 - Bios trouble

          Unfortunately, there is no such thing as "identical" when it comes to Apple products.
          Recently I had similar issue on 820-00165, it is solved by buying cleaned ME firmware (SPI ROM) chip from trusted ebay seller with providing all necessary data such as serial number etc.

            Comment

            • piernov
              Super Moderator
              • Jan 2016
              • 4439
              • France
              #4
              Re: Macbook A1466 - Bios trouble

              It's not specific to Apple products. It's the same for all Intel platforms with ME region, ie. most machines for the past 10 years…
              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                Comment

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