I've searched, both on Developers' forums and here but there's no information about Error 1015 during downgrading of iOS5 I've tried this many times but every time, it gets stuck in the Restore Loop and no matter what I use, I cannot get out of the Restore Loop. Has anyone else got this before? If so, how did you fix it? Also, any other suggestions to try to fix the restore loop or a different way of restoring? The method I'm using is: - Put iPhone into DFU Mode - Restore with 4.3.5 ipsw Official (Not Jailbroken or Custom) So far, I only have this issue with the iPhone 3GS, not the iPad 1st Gen.