Firmware package for the Toshiba Satellite C660 in its UMA version, meaning integrated graphics only with no discrete GPU. The board is the Compal LA-6841P. The 900 KB RAR archive likely contains the system BIOS image and possibly EC data, which technicians use to recover a board that powers on with no display or has a corrupted flash. Make sure the PCB is the UMA variant, because discrete-graphics boards need different firmware. Back up the existing chip contents with a programmer before writing anything.
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 →