Firmware archive in RAR format, about 1.75 MB, for a board identified only as H36FD revision 2.1; no brand or model is given. The contents are likely a BIOS dump intended for reflashing the SPI chip with a programmer. Extract it with WinRAR or 7-Zip and check the image size against the flash chip on the board, because a mismatched size will not fit. Confirm the H36FD rev 2.1 marking on the PCB and back up the original chip before writing anything.
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 →