BIOS binary for a board named C55D-A-14W with PT10AN DSC MB revision 2.1, where DSC normally means a discrete graphics board rather than UMA. The C55D model code suggests a Toshiba Satellite C55D, though the name does not state the brand outright. The ZIP is about 1.93 MB, so check the unpacked BIN size against the SPI chip capacity before programming. Use it with an external programmer to revive a board with corrupted firmware, and save a dump of the original chip 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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →