Firmware backup for the Apple A1278 MacBook Pro 13-inch built on logic board 820-2530-A, with the name marking the dump as a verified good backup. The RAR archive of 1.28 MB holds the EFI image read from the board's SPI flash. Technicians use such a dump to recover a machine with corrupted boot firmware by writing it to the chip with a programmer. Apple prints the 820-xxxx number and revision letter on the PCB, so confirm both match, and save the original chip contents before writing anything to it..
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 | 9 Oct 2017 | 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 →