Lenovo firmware image with BIOS build 6CCN18WW, version V1.05, 4.00 MB .rom. Lenovo's WW-suffixed codes identify a specific BIOS family, so this image is only for machines whose original firmware starts with the same 6CCN prefix. The model itself is not named, so confirm it from the current BIOS screen or a dump. The image targets a 32 Mbit flash. Read the existing chip twice and compare the reads before writing, then program and verify the chip with an external programmer.
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 →