Firmware archive for the MacBook Pro A1278 with Apple logic board 820-2936 revision B, stored as a 3.88 MB RAR. Apple's 820 numbering identifies the logic board, and the revision letter should match the board being repaired. This kind of image is used to rewrite the SPI boot ROM when corrupted firmware prevents the machine from starting. Keep a copy of the original ROM before flashing, because it carries machine-specific information such as the serial number, and confirm the dump size equals the flash chip capacity.
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 | 12 Dec 2018 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Oct 2019 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →