Firmware archive for an Apple A1278 13-inch MacBook Pro logic board 820-2879-B, built on the NVIDIA MCP89 chipset. Apple 820-xxxx numbers identify the logic board itself, and the letter suffix is its revision, so confirm both on the PCB. Technicians use such a dump to reprogram a corrupted SPI boot ROM with an external programmer when a board will not chime or boot. Read and save the original chip contents before writing anything. Also check that the image size matches the flash chip capacity, or it will not fit.
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 (9)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 21 Nov 2020 | Open file on RM Schematics |
| @biositechyangiyer | 2 Dec 2020 | Open file on RM Schematics |
| @laptexlaptopbios | 10 Dec 2020 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @Laptopbiossolutions | 20 Sept 2023 | Open file on RM Schematics |
| @skclappybios | 10 Apr 2024 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | 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 →