Firmware set for the MSI GF75 Thin 9SC notebook on MSI board MS-17F21. The name says it contains both the system BIOS and the EC (embedded controller) firmware, packed together in a 5.72 MB RAR archive. A technician uses this to reflash the SPI BIOS chip and the keyboard controller chip with a hardware programmer when a laptop will not power on or is stuck after a corrupted update. Read and save the original chip contents first, confirm the MS-17F21 code on the PCB, and check that the image size matches the flash 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 →