You might have got error 3194 in iTunes when you tried to update/restore your iPhone 4, 3GS, iPod touch 4G, 3G or iPad to stock or custom iOS 4.3.3 ipsw firmware.
This error can be fixed. Just follow these instructions:
- Download latest version of TinyUmbrella for your Windows or Mac
- Launch it
- Click on the Advanced tab
- Uncheck the box that says Set Hosts to Cydia on Exit
- Click on Apply Changes and finally restart your PC or MAC.
That’s it. Now you will be able to restore your device to stock or custom firmware 4.3.3