Hi All, My first time doing this on my own and looks like I've really screwed up! Have a 4.0.1 iPhone4 unlocked & jb and decided it was finally time to update it. Backed up all my info/apps but did not back up baseband or save hashes. Updated to latest firmware thru iTunes then used redsn0w to jailbreak. Worked fine until I unlocked it and now it's stuck on the booting up screen. Now that I realize I've messed up in multiple ways, is there any hope of fixing this and getting my SIM working again? Any help is greatly appreciated, thanks!!