Apple 820-2542 BIOS (4 MB)
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Board number | 820-2542 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 1.3 MB |
| BIOS chip size | 4 MB |
| Added | November 17, 2024 |
| Updated | |
| Original file name | IMACK 820-2542-A 4MB BIOS .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
IMACK 820-2542-A 4MB BIOS BIOS dump for an Apple laptop logic board, board number 820-2542, supplied with a 4 MB flash chip and packaged as a RAR archive (original file name IMACK 820-2542-A 4MB BIOS .rar, about 1.3 MB). Technicians use a dump like this 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 read out and save the original chip contents as a backup.
For board 820-2542 the catalog also has 1 BIOS dump.
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 820-2542. 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.