BIOS image named only after the H81M-P, giving no brand or board revision, as an 8.00 MB raw BIN file. The name points to an Intel H81 chipset micro-ATX motherboard, but which manufacturer made it is not stated, so verify against your board before using it. An 8 MB image fits a 64 Mbit SPI flash chip and can be written with a CH341A or similar programmer. Always read and save the original chip first, as it may contain the MAC address and serial data.
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 @afsbiosfree. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →