Small 524 KB zip for MSI board MS-6573. Only brand and model code are stated, with no revision, chipset or file type. Such compact archives usually contain a single firmware image and possibly a flashing utility, used to recover a board that fails to post after a bad update. MSI prints its MS- board codes on the PCB. Confirm that number and the revision, make sure the image matches the chip capacity, and back up the original BIOS contents before programming.
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 @IT_SERVICE_WORLD. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip