Firmware dump for the Apple MacBook Air A1466, EMC 2632, logic board 820-3437 revision B, noted in the name as a working image. The 6.57 MB RAR is intended for writing to the EFI SPI flash with a programmer when a Mac will not boot or chimes abnormally due to damaged firmware. Apple 820- numbers identify the logic board directly, so check the number and suffix on the PCB. Save the original chip first, as it holds the serial and other unique data you may want to transfer.
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 | 16 Apr 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | 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 →