Lenovo G500 BIOS image in ROM format with a size of 4.50 MB, which is unusual since common SPI chips are 4 or 8 MB, suggesting a combined or padded image. The name gives no board number or version, so inspect the file in a hex editor or UEFI tool before writing. Technicians use such images to recover a G500 that will not post by programming the flash directly. Confirm the board code on the PCB and back up the original chip before flashing.
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 .rom file
A BIOS image as shipped by the vendor (commonly AMI) — often the BIOS region only, without descriptor or ME.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →