Hello Jaxov, need some help here. I have an iPhone 4 running on jailbroken iOS 4.2.1 firmware and I want it upgrade it to iOS 4.3.3 firmware. But, the problem is that I can’t simply restore it because I always get an error 1604 every time I’m restoring it to iOS 4.3.3 via iTunes (latest version). I also want to jailbreak iOS 4.3.3. I think it has something to do with the SHSH Blobs, I am not sure. What is the best way going about to fix this. Please help asap. Thanks.
Asked by: Dane of Scotland
To successfully restore stock or custom iOS 4.3.3 IPSW / firmware on your iOS device via iTunes, you will need to put your iOS device into Pwned DFU mode using iREB RC4 on Windows. Mac OS X users can use Redsn0w as iREB alternative. You can download iREB RC4 using this from here; extract the downloaded ZIP file and save it on your desktop. Hope this tutorial will help you!