Working firmware dump for an Apple logic board 820-00134-A, stored in an 8.13 MB RAR; the brand is misspelled APLLE in the name. The 820-xxxxx number is Apple's own board part code and the suffix marks the revision. A clean known-good image helps when a MacBook board shows no boot or firmware lock after chip damage. Write it with a SPI programmer, keeping a backup of the original since it holds serial and system data, and confirm board number and chip size first.
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 | 26 May 2022 | Open file on RM Schematics |
| @fileservicelaptop | 13 Jun 2022 | 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 →