I just upgraded my JB 3.0.1 (did it with Purplera1n) to 3.1 JB with Pwnage tool, and I'm having an absolutely horrible time with it. The phone crashes very often, with and without any software installed. Already restored the 3.1 once, and I get the same problem. When it crashes and I have to hold power + home button to turn it back on. Sometimes I get just a white screen and I have to hold power + home again, other times it just takes like 3 minutes to reboot. I want to downgrade to 3.0.1 b/c I've had no problems with it, is there any way to do it?