Small 432 KB RAR archive with firmware for a board named P4M900T-M2, referring to a desktop motherboard using the VIA P4M900 chipset. The name states no brand or version, so inspect the contents before use; older boards of this class typically use small 4 Mbit or 8 Mbit flash chips, and the image must match the chip size exactly. Recovery is done by writing the dump with an SPI or LPC programmer, or a hot-swap flash. Save the original chip contents before erasing it.
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 →