Apple iMac 27 820-00609 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | iMac 27 |
| Board number | 820-00609 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 4.2 MB |
| Added | June 20, 2020 |
| Updated | |
| Original file name | Apple iMac 27 5K Retina 820-00609-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 820-00609, supplied as a RAR archive of about 4.2 MB under the original file name Apple iMac 27 5K Retina 820-00609-A.rar. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before writing anything, confirm that the board number and revision on your logic board match the file, and save the original chip contents as a backup so you can restore them if needed.
For board 820-00609 the catalog also has 1 schematic and 2 BIOS dumps.
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 27 820-00609. 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.