Firmware for the Apple MacBook Air 13 A1496 logic board 820-00165-A, following Apple's 820 board numbering with revision A. The 3.84 MB RAR likely contains a BIOS (EFI) dump for the SPI flash. Technicians write such images with an external programmer to fix boot failures, firmware lock issues or corrupted EFI. Confirm the 820 number on the board, read and save the original chip since it holds machine-specific data like serial and MAC, and ensure the image size matches the chip capacity before writing.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 25 Oct 2018 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Oct 2019 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | 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 →