RAR archive of 4.13 MB holding a firmware image for the Apple MacBook Pro A1706, EMC 3163, built on logic board 820-00923 revision A. The 820 prefix is Apple's internal board numbering, and the number printed on the PCB should match before any write. A dump like this is used to recover a board with a corrupted or locked EFI by reprogramming the SPI flash with a clip or a desoldered chip. Back up the existing chip first, as it carries machine-specific data that a generic image will not restore.
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 | 3 Nov 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 →