Backup BIOS dump for a Lenovo machine with board MTQ45NK, in a 2.08 MB RAR archive. The name gives no BIOS version or model, so match the board identifier on the PCB before use. A backup like this is used to rewrite a corrupted SPI flash with a hardware programmer such as a CH341A. Always read and store the current chip contents before erasing, check that image size equals the chip capacity, and expect serial and system data from the source unit to be carried over.
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 →