So I have tried to undertake this on my own, but it really isn't going very well. I've read everything I can find and am still having no luck. I'm currently on an iPhone 4 (4.3.5 / firmware 04.10.01) using a Gevey sim card thing. Anyway, I am trying to update to iOS 5 without any luck. First I tried downloading 5.0.1 straight from my iTunes (10.6) but when I tried to open the IPSW with redsnow (tried both 0.9.9.b5 and 0.9.9.b8) it said it wasn't supported. Then I downloaded iOS 5, which worked when I opened it with redsnow to create the broadband thing or whatever, but after I put it in "pwned DFU" mode and tried to restore it via iTunes (using the NOBB_ file redsnow created) it said something along the lines of apple can't verify...? or something? i know nothing about computers and frankly I'm surprised I got this far. So much for trying to be independent. Can anyone point me in the right direction?