Apple firmware package of 9.14 MB for a board identified as A29A18 MB at revision H, with the further references NB2769 and NB2765 and a PCB V10 marking in the name. These codes do not follow the usual Apple 820-xxxx logic-board numbering, so confirm every one of them against the silkscreen on your PCB before using the image. Extract the RAR with 7-Zip or WinRAR, read and save the original SPI contents with a programmer such as a CH341A or RT809H, and only then flash the replacement dump.
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 @sbiosworldchannel. Enginerys does not host this file.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @sbiosworldchannel | 31 Mar 2026 | Open file on RM Schematics |
| @skclappybios | 31 Mar 2026 | Open file on RM Schematics |
| @sboisworld | 31 Mar 2026 | Open file on RM Schematics |
| @dtechbios | 31 Mar 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →