BIOS firmware for the Toshiba X500 and X505 series laptops, delivered as a 1.02 MB 7z archive. The name lists no motherboard number or revision, so match the board markings yourself before relying on the image. Technicians flash such files to the SPI BIOS chip with an external programmer when the machine stays dark after a failed update. Keep a backup of the original chip and confirm the image size equals the chip capacity before writing.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →