BIOS file for a board labelled Blue XBH55-MINI-LF, version 1.0, compressed into a 1.01 MB RAR. From the name, this appears to be a mini-format desktop motherboard. No chipset or vendor details are given beyond the model string. Desktop BIOS images are usually written to an 8-pin SPI chip, either with a programmer or with the vendor flash tool. Match the model and version printed on the board, keep a copy of the original chip contents, and check the image against the chip capacity before writing.
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 →