Apple iMac 27 820-3481 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | iMac 27 |
| Board number | 820-3481 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 7.8 MB |
| Added | March 28, 2022 |
| Updated | |
| Original file name | BIOS Apple iMac 27 Late 2013 (820-3481-A).rar |
Where to get the file
Opens the matching file on RM Schematics, or its source details if it is not catalogued there yet.
Alternative links
No other copies are known yet.
Description
BIOS dump for the Apple iMac 27 with board number 820-3481, built by Apple, supplied as a RAR archive of about 7.8 MB under the file name BIOS Apple iMac 27 Late 2013 (820-3481-A).rar. The facts list the device as a laptop, which may not match an all-in-one desktop, so confirm the board number against the label on your logic board before anything else. A dump like this is used to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update.
Description generated from the catalog data. ·
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Questions about this file
How do I flash this BIOS dump?
Write it to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and keep the original contents first, and check that the chip size matches the dump.
Will this BIOS work on my board?
Only if the board number and revision match: Apple iMac 27 820-3481. Dumps from a different board or revision can leave the board dead.
What does “clean ME” mean?
The Intel ME region in the dump has been reset, so it can be used on another board of the same model. Keep your original dump and transfer serial numbers if needed.