Apple 820-2223 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Board number | 820-2223 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 2.4 MB |
| Marks | tested by uploader |
| Added | February 8, 2024 |
| Updated | |
| Original file name | APPLE 820-2223-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
APPLE 820-2223-A WORKING BIOS 100% BIOS dump for the Apple laptop board 820-2223, shared as a RAR archive of about 2.4 MB and marked as tested by the uploader. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before flashing, confirm that the board number and revision on your logic board match the file, and read out and save the original chip contents as a backup. The uploader's "tested" mark is their own claim and has not been verified here.
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 820-2223. 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.