Apple 820-4668 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Board number | 820-4668 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 7.1 MB |
| Marks | tested by uploader |
| Added | May 29, 2023 |
| Updated | |
| Original file name | 820-4668-A WORKING BIOS 100%.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
820-4668-A WORKING BIOS 100% BIOS dump for an Apple laptop board numbered 820-4668, supplied as a RAR archive of about 7.1 MB under the original name 820-4668-A WORKING BIOS 100%.rar. The uploader marked it as tested. A dump like this is used to reprogram the SPI flash chip with a programmer after BIOS corruption or a failed update. Before writing anything, confirm that the board number and revision on your logic board match the file, and save a full backup of the original chip contents so you can restore it if needed.
For board 820-4668 the catalog also has 1 schematic.
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 820-4668. 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.