Firmware image for Lenovo board VIUX1 NM-A091, revision 1.0, taken from the chip at position U49, archived as a 2.56 MB rar. The name does not state the laptop model, but NM-xxxx is the LCFC board numbering used for Lenovo notebooks. Use it to restore a corrupt BIOS by writing the U49 SPI chip with an external programmer. Check that VIUX1 NM-A091 and the revision are printed on your PCB, read and keep a backup of the original chip, and make sure the dump size matches the flash capacity.
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 →