Firmware for the MSI S30 laptop on board MS-13581, with the name pointing to BIOS release .304. It is a ZIP of about 2.72 MB that may hold a raw image or an MSI update package. Technicians use it to revive a board with corrupted firmware, either through a flash utility or by writing the SPI chip directly. MSI marks its own boards with MS-xxxx numbers. Compare the PCB marking with the board number, and save a dump of the existing chip before writing anything.
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 →