Lenovo BIOS dump for the 330S-MaxP mainboard, version V04, with the name stating an 8MB flash, which is a 64 Mbit SPI chip. It comes as a RAR archive of roughly 7.11 MB. The 330S label points to the IdeaPad 330S series. Technicians write such an image with an external programmer when the laptop powers on without display or stopped booting after an update. Check the board marking and revision on the PCB, and read and keep the original chip contents before programming.
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 →