EFI firmware for the Apple A1286 MacBook Pro on logic board 820-2915, revision B, packed into a 7.73 MB ZIP archive. The 820-xxxx number follows Apple's logic board scheme, and the revision letter should match the marking on the PCB. The archive may contain more than one file, so identify the raw SPI image before writing. Reflash with an external programmer to fix no-boot or corrupted-firmware faults, and dump the original chip first, since it carries the machine serial and system data.
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 @bios_laptop. 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 | |
|---|---|---|
| @bios_laptop | 15 Jun 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 27 May 2023 | 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 →