BIOS image for the MSI X48 Platinum desktop motherboard, board code MS-7353, PCB version 1.0, stored in a 595 KB RAR. MSI labels its boards with an MS-xxxx code printed on the PCB, and the version number matters because revisions can use different firmware. The dump is meant for recovering a board that fails to post after a bad flash, by writing it to the BIOS chip with an external programmer. Save a copy of the current chip contents first and make sure the file size equals the chip capacity.
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 →