BIOS dump for the Lenovo M92Z all-in-one, board identifier IQ77SN, compressed as a 5.98 MB RAR. The name gives no version or flash size, so inspect the contents after extraction and compare the image size with the SPI chip on the board. Technicians use such a dump to restore a corrupted BIOS with an external programmer. Confirm the IQ77SN marking on the PCB matches, and read and save the original chip first, since it may hold machine-specific information.
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 →