Firmware archive for the Apple A1502 MacBook Pro, logic board 820-4924 in its -09 revision, with the Management Engine region reported as cleared. A cleaned ME region is the usual fix when a board will not boot properly after a chip swap or a corrupted dump. Confirm the 820-4924 number and revision silkscreened on the board, read and save the original SPI flash contents first, then write the image with a programmer such as a CH341A, checking that its size matches the chip capacity.
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 | 22 Apr 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 →