BIOS archive labelled V231 NPB version C with a 4 MB image size; the name gives no brand, so identify the device from the board markings before use. A 4 MB file corresponds to a 32 Mbit SPI flash chip, a common size on older laptops and desktop boards. Write it with an external programmer to restore a board with corrupted firmware. Read and keep the original contents first, confirm the chip capacity matches, and make sure the board model and version letter agree with your hardware.
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 →