BIOS for the Toshiba P55W laptop with mainboard code TRCU, revision 2.2A, archived as RAR at 7.63 MB. The dump is intended for reprogramming the flash chip with an SPI programmer when the machine does not start or post due to corrupted firmware. Save a backup of the existing chip first, since machine-specific data may be lost otherwise. Confirm that the board code and revision on the PCB match and that the image size suits the capacity of the installed flash chip.
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 .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 →