Apple 820-00426 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Board number | 820-00426 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 4.5 MB |
| Added | January 31, 2022 |
| Updated | |
| Original file name | Macbook board 820-00426-A CPU I7.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 an Apple laptop, board number 820-00426, supplied as a RAR archive of about 4.5 MB under the original file name "Macbook board 820-00426-A CPU I7.rar". The file name suggests a revision A board with an i7 CPU, but no other revision or chip details are listed on this page. Technicians use a BIOS dump like this to reprogram the SPI flash chip with a programmer after corruption or a failed update.
The catalog also lists 1 schematic, 3 boardview files, and 1 BIOS dump for board 820-00426.
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 820-00426. 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.