So far as I know, this is a unique problem. I did a search on the site and couldn't find anything... but then again, I did put myself in this situation. I received my iPhone 4 about a week ago, and as I was syncing it, I noticed it would not update to iOS 4.3.3. (it came with 4.3 loaded on it). I decided to ignore it for a while, as I had to go. Quickframe to yesterday, when now I'm trying to update to 4.3.1 and 4.3.3 by manually downloading the IPSWs, saving them and using shift+click Update. The update goes all the way, fully extracting the software, but when it gets to "verifying update with Apple" then I get a 3194 error "iPhone could not be restored. An unknown error occurred (3194)." I even just manually downloaded 4.3, and the same thing happened. What I really wanted to do was jailbreak it, so I used redsn0w 0.9.6rc16 to jailbreak, selecting the 4.3.1 IPSW when prompted. It seemed to have worked fine, but the Cydia icon was just blank white. Weird. When I opened it, it would immediately crash and revert back to home screen. The weird thing is, this also happens with Safari, but with no other app. Now, I want to just return my iPhone, since it won't restore OR update to any other iOS, but I know they'll blame my problems on the jailbreak, and call the warranty void. So, I just want to take the jailbreak off. I'm using iTunes 10.3.1.55 on Windows Vista, all Vista updates installed. tl;dr -- I need to remove the redsn0w jailbreak off my iPhone 4 WITHOUT using the 'restore' or 'update' functions on iTunes. If you need any other info, or want a video of me trying to restore so you can see all the steps, let me know. Pretty desperate here.