BIOS image collection for Lenovo platforms GS440 and GS540, built on LCFC board NM-C511 at revision 1.0, packed in a 5.16 MB RAR. The NM-Cxxx numbering identifies boards from LCFC, Lenovo's in-house manufacturer. A technician would program this onto the SPI flash using a hardware programmer to revive a board with corrupted firmware. Compare the board number on the PCB before use, read and archive the original chip first, and confirm the binary length equals the flash chip capacity so the write completes correctly.
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.
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 →