Firmware dump for the Apple MacBook Pro 13 model A1708, EMC 3154, logic board 820-00840-A, in a 17.9 MB RAR archive. Apple identifies logic boards with 820-prefixed numbers, and the trailing letter marks the revision. Images like this are written to the board's SPI flash with a programmer to recover a corrupted EFI firmware. Save the original chip contents first since they hold machine-specific data such as serial number, and confirm the image size matches the flash chip 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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 18 Oct 2023 | Open file on RM Schematics |
| @generalbios | 20 Oct 2023 | Open file on RM Schematics |
| @generalbios | 21 Oct 2023 | Open file on RM Schematics |
| @generalbios | 26 Oct 2023 | 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 →