MSI MS-6777 package, the largest in this group at 5.77 MB, stored as a zip archive. The file name lists only the board code, with no revision, chipset or document type mentioned, so contents must be verified after unpacking. MSI uses MS-numbers as internal project identifiers and prints them on the board. Ensure the code and revision agree with the hardware. Schematics in such archives help trace power rails and check for shorts; firmware should be flashed only after backing up the original.
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.