Working BIOS for Wistron motherboard 10315-1, a 2.01 MB RAR archive. The roughly 2 MB size points to an older board with a 16 Mbit SPI or similar flash part. Check the chip capacity before writing, because a mismatched image will not fit or will fail verification. Wistron uses this numeric-dash board numbering on boards made for several notebook brands. Write the extracted image with an external programmer, keep a backup of the original chip and confirm the number on the PCB first.
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 @schematiclaptopramkushwaha. 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 →