I'd Please Like Some Of My Doubts About Android to be cleared.. [I'm a Veerrryyy biiiggg n00b.] 1) Can i upgrade from Android 2.3.3 to Android 3.0 directly?? [ processor- cortex A8 1GHz RAM 512mb] 2)What are the disadvantages of rooting? if i root n den change my mind, can i go back to normal? thankz.. =)