Binary BIOS image for a Lenovo board marked BM5866, version 1.3, provided in an 8.38 MB rar archive. The bin file is intended for direct programming of the motherboard SPI flash with a hardware programmer when a system powers on without display or fails after a bad update. Before writing, confirm the board marking and v1.3 revision on the PCB match, read and keep the original chip contents, which may hold serial and licence data, and make sure the image size corresponds to the installed flash chip.
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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 25 Nov 2023 | Open file on RM Schematics |
| @generalbios | 16 Dec 2023 | Open file on RM Schematics |
| @generalbios | 17 Dec 2023 | Open file on RM Schematics |
| @generalbios | 14 Jul 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 →