Firmware archive labeled a126 with the board number 0820-2249-A, packed as a 1.27 MB RAR. The 820-xxxx style resembles Apple logic board part numbers, but the name does not confirm the device, so check against your board. Such an image is written to the boot flash with a programmer to recover a board with corrupted firmware. Read and archive the original chip contents first, as they may hold serial data, and make sure the image size matches the flash 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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 13 Jul 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 →