EFI firmware dump for the Apple A1278 MacBook Pro logic board 820-2565-A, packaged as a 2.74 MB ZIP archive. Apple's 820 numbering identifies the specific logic board and revision, so confirm it on the PCB rather than relying on the A1278 model number alone. The dump is written to the SPI flash with an external programmer when a corrupted firmware stops the Mac from booting. Read and save the original chip first, because it holds the machine's serial and network identifiers.
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.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →