Firmware dump for the Apple A1502 MacBook Pro, logic board 820-3476 with revision A noted in the name. Apple uses the 820-xxxx format for its logic board part numbers, and the exact number is printed on the board itself, so compare it before use. Such an EFI image is normally written directly to the SPI flash with a hardware programmer when a Mac will not boot or is stuck on a corrupted firmware. Dump and keep the original chip first, since it holds machine-specific data such as serial number and network addresses.
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 @Laptopdesktopbios. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @Laptopdesktopbios | 20 Jul 2024 | Open file on RM Schematics |
| @laptopchiplevelrepair | 20 Jul 2024 | Open file on RM Schematics |
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Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →