Firmware package for the Apple A1502 MacBook Pro, tied to logic board 820-4924 with the -09 suffix, compressed as a 4.19 MB ZIP. Apple 820-xxxx numbers identify the logic board, and the trailing digits mark a board revision, so compare it with the label on your board. A dump like this is used to reprogram the boot ROM SPI chip when a Mac shows no chime or a firmware lock. Back up the original ROM before writing, since serial and configuration data are stored there and need to be preserved or 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 | 11 Jul 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Oct 2019 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | 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 →