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820-3437 No Serial # showing

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  • #16
    I'm thinking maybe I need to look at a dump from a functioning logic board with a serial number and Fsys so I can tell what I am looking at.

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    • #17
      I was reffering to a BIOS from other board, which you want to modify...

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      • #18
        Ok, so I can take bios from similar boars and modify serial number?

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        • #19
          Yes.
          Do NOT forget to clean ME and fix checksum, after write the file in the Mac...

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          • #20
            Ok cool. I can clean me and fix checksum with Medusa I believe

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            • #21
              Does the ram and all have to be the same? Or just a similar BIOS version?

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              • #22
                Also, Do you know if I can find a download of a good BIOS online?

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                • #23
                  Should be already posted on the forum, did you search?

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                  • #24
                    my Just wanted to say I just got a Medusa and you have to have one of these! I really like it!

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                    • #25
                      So I found clean BIOS, cleaned ME, reset PRAM, Tried to fix checksum with MEDUSA but it still tells me Fsys not found. I plugged the Medusa into 5 other machines and it shows the Fsys but this one is still not showing it. I'm wondering if the SPI ROM is no good.

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                      • #26
                        Even with the new BIOS flashed to it the machine still works but no serial #

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                        • #27
                          if I wanted to replaced the ROM, can I use one from a 820-00165 if this is an 820-3437? I have donors coming but I have 00165 boards on hand now.

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                          • #28
                            I can wait, but other than the no serial # this is a fine looking machine.

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                            • #29
                              For a MacBook...

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                              • #30
                                You can take entire Fsys area form donor board and then change the serial number.
                                Should be from 3437 board of course...

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