BIOS firmware for the MSI GS70 laptop, tied to the MSI board number MS-17721 and marked version 1.0. MSI uses the MS-xxxx pattern for its own in-house motherboards, which makes matching easier: the number is usually printed on the PCB near the memory slots or another visible area. The RAR archive is about 3.06 MB and should be extracted before programming. Technicians write such an image to the SPI flash with a programmer when the system shows no display or no boot. Back up the existing chip first and confirm the image size matches the flash chip.
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 →