RAR archive with BIOS firmware for a Lenovo 3000 C300 all-in-one PC, packed to 429 KB, with no board number or version in the name. Extract it to identify whether it is a raw flash dump or an update utility package, and check the image size against the BIOS chip on the board. A raw dump is used with an external programmer when the system no longer posts. Save the original chip contents before writing, and confirm the motherboard matches this AIO model.
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 →