Well, Vizio just screwed me. When I turned on the device, it went through a little wizard, and as part of the wizard, it downloaded the 1.5 update -- and tried to make it appear mandatory. Now I have an unrootable device. I am hoping Woot is going to step up and allow me to either replace it, or return it. I'm not interested in an unrootable device. According to Vizio support, Woot should accept it as a refund with no trouble. Evidently the breaking of root is due to Netflix (a service I don't want, or use) requiring it.