Firmware dump for the Apple MacBook Pro A1707 on logic board 820-00281-A, provided as a 13.2 MB RAR. Apple uses 820- numbers to identify its logic boards, with the trailing letter indicating revision. Such images are written to the SPI flash with a programmer to recover boards stuck with corrupted firmware. Extract the image and confirm its size matches the flash chip on the board. Read and keep the original chip contents first, since they hold machine-specific data such as serial and configuration.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 25 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 26 Apr 2022 | Open file on RM Schematics |
| @dtechbios | 30 Sept 2025 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 2 Aug 2026 | 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 →