8 MB BIOS binary for the ASUS H81M-CS motherboard on the LGA1150 socket, per the name; the 8R token is not explained. It is a raw image suitable for programming the 64 Mbit SPI flash directly with an external programmer when the board stays dead after a failed update. The H81 chipset supports Haswell processors, so the image covers firmware and the ME region together. Back up the existing chip before writing and confirm the board model and revision on the PCB.
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 @abgm_manutencao_bios. 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 →