BIOS image for a Lenovo ThinkPad P50 with a built-in Xeon E3 CPU, board BP500, LCFC NM-A451, in a 7.96 MB RAR. Xeon P50 builds use different processor support, so this file suits Xeon systems rather than Core i5 or i7 units. LCFC follows the NM-xxxx board numbering for Lenovo. Back up the original SPI chip before flashing to keep serial and board data. Check the image size against the flash chip and verify the write afterwards.
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 →