BIOS (boot ROM) dump for the Apple MacBook Pro A1260, logic board 820-2249, compressed in a 1.26 MB RAR. Apple numbers its logic boards with an 820- prefix etched on the PCB, and this must agree with the board being repaired. Such dumps are used to reprogram a corrupt boot ROM chip with an external programmer. Read and keep the original chip contents first, since they can hold machine-specific data such as the serial number, and confirm the image size matches the chip.
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 | 7 Mar 2018 | Open file on RM Schematics |
| @biositechyangiyer | 19 May 2020 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 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 →