Hi guys, really need some help here. I tried to downgrade to 4.3.3 from iOS 5 beta 1 after having some hands on. After reading online of what to do, i simply used iTunes 10.5 b to shift restore to 4.3.3 However, whenever my restore is about to be completed, an unknown error (1) appears. I read online it might relate to USB ports so i changed to other USB ports with no results. Can someone help me?? I am having a iphone 4 stuck on recovery mode and no means to downgrade.