I tried both ways of flashing. I'm thinking there's some problem with my secondary master/the controller drivers, etc. Although previous firmwares have worked with no problem, this one seems to have triggered a problem. I've had a problem in the past with plextools updates when I have a dvd drive as the secondary slave. Plextools wouldn't work unless I disconnected the dvd. The controllers were switched, updated, etc., but this made no difference.