Boot ROM dump packed in a 2.12 MB RAR for the Apple MacBook Air A1369 main logic board 820-2838, revision A, project code K16. Repairers use an image like this to recover a machine with a damaged EFI or a replaced flash chip, writing it directly with a programmer clip or after desoldering. Always read the original chip twice and keep that copy. Make sure the PCB carries the same 820-2838 number, and note that serial and system data may need to be transferred from the original dump.
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 .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 →