BIOS archive labelled C850-B886, most likely for a Toshiba Satellite C850 configured with a B886 processor, though the name does not state the brand. It comes as a 2.90 MB ZIP that probably contains an SPI flash image for recovery with a programmer. Since the C850 line used several motherboards, check the board number printed on your PCB before writing. Save a complete read of the existing chip first, and confirm the extracted 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 .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 →