Firmware image for the Apple MacBook Air A1370, K78 project, logic board 820-3024-B, provided as a 3.87 MB ZIP. It is meant for restoring the EFI SPI flash using a programmer such as a CH341A or a similar tool. Apple uses 820-series numbers with revision letters to identify logic boards, so match the PCB marking first. Back up the existing chip before flashing because it stores machine-specific data, 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.
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 →