my phone is iPhone 4 with iOS 5.0.1 BB 1.59.00 untethered JB..... phone stuck on boot logo, so m trying " Redsn0w - Just Boot " method to recover my home screen. but as i select 5.0.0 ipsw file . it shows that error. i also tried 5.0.1 ipsw but the process stuck at " uploading first stage " any idea ? m i doing something wrong ? Please help me !!!