apple imac 820-2828-a bios

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  • kesmeseker
    Senior Member
    • Jan 2015
    • 117
    • turkey

    #1

    apple imac 820-2828-a bios

    ı need 820-2828-a bios dump. plase help me.
  • techman1025
    Badcaps Veteran
    • Jun 2014
    • 497
    • United States

    #2
    Re: apple imac bios

    Make sure to change serial #
    Techman1025
    Attached Files

    Comment

    • kesmeseker
      Senior Member
      • Jan 2015
      • 117
      • turkey

      #3
      Re: apple imac bios

      thanks

      Comment

      • kesmeseker
        Senior Member
        • Jan 2015
        • 117
        • turkey

        #4
        Re: apple imac bios

        not display

        Comment

        • techman1025
          Badcaps Veteran
          • Jun 2014
          • 497
          • United States

          #5
          Re: apple imac bios

          Hi MINE IS 100 % WORKING .If you did the steps after the flash .



          Make sure to do this steps after reflash:
          Resetting NVRAM
          i) Shut down your Apple Mac.
          ii) Locate the following keys on the keyboard: Command, Option, P, and R.
          iii) Turn on your Mac.
          iv) Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
          v) Hold these keys until the computer restarts and you hear the startup sound for a second time.
          vi) Release the keys.
          And after that... reinstall the OS!

          So let say your original bios work and it stop at password ...i gave you back your orignal file with out password only . You need to run the steps after so the cloud don't reset password. If you have no display you have more then just a password problem did you try a external monitor ?
          Techman1025

          Comment

          • techman1025
            Badcaps Veteran
            • Jun 2014
            • 497
            • United States

            #6
            Re: apple imac bios

            Originally posted by techman1025
            Hi MINE IS 100 % WORKING .If you did the steps after the flash .



            Make sure to do this steps after reflash:
            Resetting NVRAM
            i) Shut down your Apple Mac.
            ii) Locate the following keys on the keyboard: Command, Option, P, and R.
            iii) Turn on your Mac.
            iv) Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
            v) Hold these keys until the computer restarts and you hear the startup sound for a second time.
            vi) Release the keys.
            And after that... reinstall the OS!

            So let say your original bios work and it stop at password ...i gave you back your orignal file with out password only . You need to run the steps after so the cloud don't reset password. If you have no display you have more then just a password problem did you try a external monitor ?
            Techman1025
            Ok im helping many people and i just realized you where NOT the one with passwork locked disregard post before this one . Ok does the old file work? what is exactly the problem i will try and help you.
            Techman1025

            Comment

            • kesmeseker
              Senior Member
              • Jan 2015
              • 117
              • turkey

              #7
              Re: apple imac bios

              thanks ... working.test ok

              Comment

              • marlin297
                New Member
                • Nov 2022
                • 4
                • africa

                #8
                Re: apple imac bios

                Originally posted by techman1025
                Make sure to change serial #
                Techman1025
                thank you

                Comment

                • killercuter
                  New Member
                  • Aug 2023
                  • 1
                  • venezuela

                  #9
                  Re: apple imac bios

                  how to change serial in bios imac

                  Comment

                  • SMDFlea
                    Super Moderator
                    • Jan 2018
                    • 20738
                    • UK

                    #10
                    Re: apple imac bios

                    Originally posted by killercuter
                    how to change serial in bios imac
                    https://www.badcaps.net/forum/showpo...43&postcount=5
                    4.3. Apple
                    For 2017 and older machines, serial number is stored in Fsys store of BIOS and can be edited with hexadecimal editor. Fsys checksum needs to be fixed afterwards
                    Search for "ssn", edit the serial number, save, open dump in UEFITool, go to the Fsys store and write down the suggested checksum in the panel on the right. Checksum is 4 bytes at the end of the Fsys store, between one zone of 0x00 either Gaid or another zone of 0xFF, it must be written in reverse order (so last 2 characters from UEFITool must be written first).
                    See: https://www.youtube.com/watch?v=poA8HByYqTM

                    .
                    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                    Comment

                    • mxkosem
                      New Member
                      • Nov 2023
                      • 8
                      • Turkiye

                      #11
                      Thanks a lot

                      Comment

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