Lenovo firmware archive for the board identified as BM5338, revision 1.4, in a 2.19 MB RAR file. The name does not state the laptop or desktop model, so match the board code and revision printed on the PCB before using the contents. Archives like this usually hold a BIOS image meant for programming the SPI flash chip with a hardware programmer when the system will not post. Read and back up the existing chip first and confirm the dump size matches the flash capacity. Extract it with WinRAR or 7-Zip.
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 | 12 Jun 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 29 Oct 2019 | 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 →