Firmware archive named eDM-pITX-BT, which appears to refer to an embedded pico-ITX single-board computer. The name gives no version, chip type or capacity, so inspect the contents before use. Embedded board BIOS images are normally written to the onboard SPI flash with a hardware programmer or the vendor's update tool. Make a full backup of the existing chip first, and check that the image size matches the flash capacity, since a mismatched file will not program correctly.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →