I'm using IPSW 4.2.8 and I wanted to re-jailbreak my phone. I did everything correctly and when I shift clicked to pick the sn0wbreeze ipsw, everything started going just fine. At the top of itunes it got all the way to "preparing iPhone for restore" than the screen kinda flickered and it said "itunes has detected a device in recovery mode" and it didn't restore. My screen is just white.