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    #1

    820-01237-a bios?

    Does anyone have BIOS for 2019 iMac 4K 21.5" A2116?

    Board model: 820-01237-A

    Thanks
    Tags: None
    #2
    Re: 820-01237-a bios?

    Originally posted by grimacelord View Post
    Does anyone have BIOS for 2019 iMac 4K 21.5" A2116?

    Board model: 820-01237-A

    Thanks
    post the original bios even if it is corrupted
    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.

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      #3
      Re: 820-01237-a bios?

      Originally posted by peste View Post
      post the original bios even if it is corrupted
      Ooops. I meant to post it before.

      Could someone look at this and see if it appears to be corrupted? I'm troubleshooting an iMac that was working fine and then there was a series of power outages and afterwards the iMac does not POST. Diagnostic LED #1 and #2 are illuminated, but not #3. I did a quick visual inspection of the logic board and found no visibly bad/burned components and found no shorts. Since the iMac isn't POSTing, I thought it may be a corrupt BIOS. Looking at my dump in UEFITool, the parser indicates that there may be some corruption, but I honestly don't know enough about BIOS editing/repairing to interpret the parser output.

      Attached Files
      Last edited by grimacelord; 02-09-2023, 10:00 AM.

      Comment

        #4
        Re: 820-01237-a bios?

        Hi every one. Can some one help me please to remove the EFi Lock on thish bios -This is the start block of SVS 240050.. But I can find the End block to remove it.
        Attached Files

        Comment

          #5
          Re: 820-01237-a bios?

          I find it is 23E050 - 240050 thanks

          Comment

            #6
            Re: 820-01237-a bios?

            Originally posted by burkancho View Post
            Hi every one. Can some one help me please to remove the EFi Lock on thish bios -This is the start block of SVS 240050.. But I can find the End block to remove it.
            You probably should have started your own thread instead of ask your question in mine, but try this.
            Attached Files

            Comment

              #7
              Re: 820-01237-a bios?

              So I've been doing some research on my own since I made this thread and I did eventually find a supposedly clean BIOS. I tried flashing it to the chip, but the iMac won't turn on at all with the "new" BIOS. At least with my old corrupt BIOS, it powered on, it just didn't POST.

              Attached is my original corrupt BIOS and the new one that I found. Can someone take a look at these and help me? Thank you
              Attached Files

              Comment

                #8
                Re: 820-01237-a bios?

                Originally posted by grimacelord View Post
                You probably should have started your own thread instead of ask your question in mine, but try this.
                Hi every one. Can some one help me please to fix this bios
                Attached Files

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