EFI firmware dump for the Apple A1286 MacBook Pro on logic board 820-2532 revision A, labelled as good, which suggests a working image. The ZIP is roughly 1.42 MB. Apple uses 820-prefixed numbers for logic boards, and matching the exact number is essential. Technicians write such dumps to the boot ROM with a programmer to clear corrupted firmware. Because the original chip holds serial and system data, read it first and transfer those details if required, and check the image size against the chip.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 8 Apr 2019 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →