I've been searching for a while now on how to re-restore iOS 5.1.1 on iPhone 4. There are too many varying responses, and still I'm not clear about the process. I have a factory unlocked iPhone 4 running iOS 5.1.1 currently. Now since, Apple stopped signing iOS 5.x long time ago, how do I restore. I have my 5.1.1 (9B206) blobs saved from cydia, have the corresponding ipsw. I've read, people get strange error codes like -1. How do I re-restore, and also if I happen to get into error -1, how do I get out of it? Please help, its urgent. Thanks!