RAR archive with a BIOS image for the ASUS B360M-KYLIN desktop motherboard, flagged as tested OK in the name. Boards on the Intel B360 chipset store the full firmware in an SPI flash chip, and a dump like this is written with an external programmer when the board fails to post after a corrupted update. Extract the archive and read the image size first, then back up the original chip before writing. The name gives no board revision, so compare the PCB markings as well.
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 →