If you got error 3194 while upgrading your iPhone 4, 3GS, iPod touch 4G, 3G or iPad to stock or custom iOS 4.3.3 ipsw firmware, iH8sn0w has just mentioned a way to fix this problem.
Removing Cydia’s SHSH Caching Server to fix 3194 error:
- Download TinyUmbrella from http://thefirmwareumbrella.blogspot.com
- Launch it.
- Click on the “Advanced” tab.
- Uncheck “Set Hosts to Cydia on Exit”
- Click on “Apply Changes”
- Reboot your PC/Mac.