Has anyone (without root) found any way to revert to the previous firmware? The horrendousness of every screen grates on me more and more... I assume someone thinks it is nicer, but now I've found something to hate on every screen. The radio is pretty much unusable, it is like coming out and finding it was stolen out of your ICE overnight. Its a pretty bold move to sell a six figure car, then start breaking it. I'm pretty much at the call-the-attorneys stage, since customer service told me there is no way to do it. Have not tried bribing the local SC techs, not sure how well that would go over. I was hoping for a diplomatic solution, but not seeing one... This garbage has to go.