My iPhone 4 had frozen on lock screen so I held Power+Home and it turned off. Ever since then I haven't been able to power it on. I've left it to charge for 2 hours and then tried turning it back on, no luck. I did google the problem and came across several methods but none of them worked. It's like the phone is completely off and won't power on. I had a friend switch out the battery and even when he put a different battery on the iPhone 4 it wouldn't power on either. I was on 4.2.1 with Baseband 3.10.01 and was trying to preserve the Unlock but unfortunately didn't get to save my SHSH Blobs. I did try to restore via iTunes and update to 5.0.1 and I keep getting error 1601. Is there any way to fix the iPhone 4? Even if i have to update it I could at least use it and have it restored fresh to new. Screen just stays black and nothing happens.