I bought an iPhone 4 and found out it is on 4.12.02, I think for a Gevy Sim, and iOS 6.0. I can't set up the phone for anything right now and iTunes says to install a valid sim card. I want to restore it to stock firmware and BB so I can factory unlock it. How can I do that? I’ve tried downgrading to 5.1.1. I’ve tried creating firmware with sn0breeze and using redsn0w to downgrade…but nothing is working. Any ideas out there??
ALSO...I would factory unlock it now, but iTunes won't recognize the phone and says....the Sim card does not appear to be supported...Enter a valid sim card.