please help me, I'm stuck after restore ios 4.3.3 or 4.2.1 and my phone suddenly going to DFU mode, "black screen mode" , I'm already using tiny umbrella for bypassing 3194 error, and using IREB for error 1600 bypassing, and im trying to restore from custom firmware 4.3.3 which is created from snow breeze. im using latest version of i tunes. and modifying the hosts file but I'm stuck to DFU mode after successfully restore. please help me!! Thanks in advance.