Desktop BIOS for a Lenovo system board identified as MTQ45NK, also labelled L-IQ45, packed in a 2.08 MB RAR. The L-IQ45 tag points to a Lenovo board built around the Intel Q45 chipset family, as the naming implies. Technicians use such dumps to recover boards that stay dark after a failed update or chip corruption, writing the image to the SPI flash with a programmer. Match the board marking first, read and save the original chip, and confirm the image size fits the installed flash part.
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 @afsbiosfree. 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 →