Firmware for the Wistron LV315KB motherboard, board number 17807-3M, BIOS version 6SCN41WW, packed as a 4.82 MB RAR. No laptop brand is given in the name, but the board code and 6SCN version string belong to a known Wistron platform. Wistron uses a five-digit number followed by a suffix, printed on the PCB, so check 17807-3M before writing. Read the original SPI chip first and keep the backup, and make sure the image matches the flash 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 →