EFI BIOS archive for the 13 inch MacBook Air A1466 from 2015 on logic board 820-00165. Apple's newer five-digit 820 numbers follow the older four-digit series, and the exact board number printed on the PCB must match before flashing. The 4.3 MB ZIP should contain an image for the SPI flash, used to repair boards that will not boot or show a corrupted firmware. Dump the original chip first with a programmer, since serial and system data from it may need to be transplanted.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 5 May 2018 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
| @generalbios | 8 Oct 2023 | Open file on RM Schematics |
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 →