Working BIOS image for Wistron motherboard 17509-1, a 32 MB file supplied without an extension. A 32 MB dump corresponds to a 256 Mbit SPI flash chip, so a smaller chip cannot hold it. Check the marking on the chip before programming. Technicians use dumps like this to restore boards with corrupted firmware, using a CH341A, RT809H or similar programmer with a clip or with the chip desoldered. Read and save the existing contents first, and confirm the board number on the PCB.
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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →