Need Help A1286 2012 EMC 2556 bios password

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  • myjunaid
    Member
    • Nov 2019
    • 32
    • Spain

    #1

    Need Help A1286 2012 EMC 2556 bios password

    820-3330-B
    Hi Can anyone help me out to remove the password from this bios dump file
    Thanks in advance
    Macbook pro
    A1286
    2012
    Attached Files
    Last edited by myjunaid; 02-28-2021, 12:40 AM.
  • peste
    Super Moderator
    • Dec 2016
    • 12244
    • ROMANIA

    #2
    Re: Need Help A1286 2012 EMC 2556 bios password

    Originally posted by myjunaid
    820-3330-B
    Hi Can anyone help me out to remove the password from this bios dump file
    Thanks in advance
    Macbook pro
    A1286
    2012
    the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..
    Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

    >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

    Every donation made will go towards server fees and maintenance costs.

    Comment

    • myjunaid
      Member
      • Nov 2019
      • 32
      • Spain

      #3
      Re: Need Help A1286 2012 EMC 2556 bios password

      i tried 3 times and everytime i read it gives me only 128kb
      i am using CH341A
      you can also see the picture of the bios in the zip file
      can you please guide me what i am doing wrong
      Attached Files

      Comment

      • myjunaid
        Member
        • Nov 2019
        • 32
        • Spain

        #4
        Re: Need Help A1286 2012 EMC 2556 bios password

        Originally posted by peste
        the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..
        Everytime i read it gives me same size i have read 3 times also you can see the picture of the bios chip and the programmer in the zip file

        Comment

        • piernov
          Super Moderator
          • Jan 2016
          • 4435
          • France

          #5
          Re: Need Help A1286 2012 EMC 2556 bios password

          If you don't select the correct chip in the programmer software it won't work.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

          Comment

          • myjunaid
            Member
            • Nov 2019
            • 32
            • Spain

            #6
            Re: Need Help A1286 2012 EMC 2556 bios password

            i have tried reading the chip by changing the manu to Winboard and 1 time i read with w25q64bv it gave me 8mb file and 2nd time i read w25q128bv and it gave me 16mb file
            let me know if i m doing something wrong
            Attached Files

            Comment

            • myjunaid
              Member
              • Nov 2019
              • 32
              • Spain

              #7
              Re: Need Help A1286 2012 EMC 2556 bios password

              Originally posted by peste
              the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..
              Originally posted by piernov
              If you don't select the correct chip in the programmer software it won't work.
              i have my bios picture on my zip file can you guide me the proper setting to read that chip
              thank you for help

              Comment

              • SMDFlea
                Super Moderator
                • Jan 2018
                • 20300
                • UK

                #8
                Re: Need Help A1286 2012 EMC 2556 bios password

                Try NeoProgrammer and ASProgrammer software.You can make a backup with each one and then compare the files with a hex editor to make sure both are the same.Or make 2 backups using the same software and compare both.If they are the same post your backup.

                https://www.badcaps.net/forum/showpo...04&postcount=7

                https://www.badcaps.net/forum/showpo...6&postcount=10
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                • peste
                  Super Moderator
                  • Dec 2016
                  • 12244
                  • ROMANIA

                  #9
                  Re: Need Help A1286 2012 EMC 2556 bios password

                  Originally posted by myjunaid
                  i have my bios picture on my zip file can you guide me the proper setting to read that chip
                  thank you for help
                  the 8MB bios seems ok ... look in the programmer's software, what is written on the bios chip and select ... if you can't find it, try to enter it manually ... use this program..https://www.badcaps.net/forum/showpo...unt=10...other users have succeeded with it ...
                  Attached Files
                  Last edited by peste; 02-28-2021, 11:12 AM.
                  Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                  >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                  Every donation made will go towards server fees and maintenance costs.

                  Comment

                  • myjunaid
                    Member
                    • Nov 2019
                    • 32
                    • Spain

                    #10
                    Re: Need Help A1286 2012 EMC 2556 bios password

                    Originally posted by SMDFlea
                    Try NeoProgrammer and ASProgrammer software.You can make a backup with each one and then compare the files with a hex editor to make sure both are the same.Or make 2 backups using the same software and compare both.If they are the same post your backup.

                    https://www.badcaps.net/forum/showpo...04&postcount=7

                    https://www.badcaps.net/forum/showpo...6&postcount=10
                    Thank you for the softwares yes my Programmer was detecting wrong chip
                    i have read the file with neo programmer and the as programmer
                    both files attached now with their pictures and now i can also find $SVS
                    you can check and if possible clear the efi lock for me will appreciate
                    Attached Files

                    Comment

                    • myjunaid
                      Member
                      • Nov 2019
                      • 32
                      • Spain

                      #11
                      Re: Need Help A1286 2012 EMC 2556 bios password

                      Originally posted by peste
                      the 8MB bios seems ok ... look in the programmer's software, what is written on the bios chip and select ... if you can't find it, try to enter it manually ... use this program..https://www.badcaps.net/forum/showpo...unt=10...other users have succeeded with it ...
                      please check my last message i have read the file from 2 different programmer have a look i think now its fine

                      i remember you helped me out long time ago in my Hp bios for that Thank you very much

                      Comment

                      • peste
                        Super Moderator
                        • Dec 2016
                        • 12244
                        • ROMANIA

                        #12
                        Re: Need Help A1286 2012 EMC 2556 bios password

                        Originally posted by myjunaid
                        please check my last message i have read the file from 2 different programmer have a look i think now its fine

                        i remember you helped me out long time ago in my Hp bios for that Thank you very much
                        you have the bios at post # 9
                        Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                        >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                        Every donation made will go towards server fees and maintenance costs.

                        Comment

                        • myjunaid
                          Member
                          • Nov 2019
                          • 32
                          • Spain

                          #13
                          Re: Need Help A1286 2012 EMC 2556 bios password

                          Thank you very much it worked

                          Comment

                          • pankajis2005
                            New Member
                            • Nov 2010
                            • 3

                            #14
                            Re: Need Help A1286 2012 EMC 2556 bios password

                            Can you help he to clear (unlock) the firmware password
                            Attached Files

                            Comment

                            • ranzoo
                              Member
                              • Jun 2015
                              • 17
                              • algeria

                              #15
                              Mackbook pro A1286 EMC 2556

                              Macbook pro a1286 Motherboard number: 820-3330

                              eeprom : 25L6406E

                              EFI UNLOCK /FILE TEST
                              Attached Files

                              Comment

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