BIOS image labelled BM5866 version 1.4 for a 16MB SPI flash chip, packed in an 8.39 MB RAR archive. The name gives no laptop brand or model, so identify the target by the BM5866 marking printed on the mainboard itself. Such dumps are normally written with an external programmer to revive a board whose firmware is corrupted. Read and save the original chip first, confirm its capacity is 16MB, and compare the board marking carefully before writing the image.
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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 6 Aug 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | 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 →