: what exactly is that BIOS update utility expecting to see to accept that it's the correct hardware to do the job it's supposed to do. What is missing, how does it know that this is not the original Window preinstallation ?
Did you install the VAP (value added package) for Win 7 which can be found on Toshiba driver page?
Do this since the VAP contains some essential components to run BIOS update or other Toshiba tools.