BIOS flash upgrade?

After attempting to download and run Toshiba’s v2.0 bios flash upgrade from their website my computer will not even power on now. Any suggestions? I’ve tried all the obvious tricks, but system just will not boot. Toshiba gave me a boo hoo bucaroo answer. I would have expected more from someone with the reputation of Toshiba. Unless Pre Paid Legal can resolve this to my satisfaction I will never buy another Toshiba product.