Firmware dump for an Apple A1286 MacBook Pro on logic board 820-2915-B. The archive is a 3.75 MB 7z file. Apple identifies its logic boards with 820- part numbers and a trailing revision letter, which must match the board on the bench. Use this image to reprogram the SPI boot ROM with an external programmer when the EFI is corrupted or a locked chip needs replacing. Read and keep the original contents first, since they contain the machine serial and system configuration data.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →