How to Fix Error 3194 iTunes
Occurs when trying to install an old firmware and Apple’s server disallows the installation. The only solution is to have SHSH backup and modify the hosts file to point to Saurik’s Cydia server where they are backed up (or localhost if you have it yourself).
Resolve error 3194 by updating to the latest version of iTunes. “This device is not eligible for the requested build” in the updater logs confirms this is the root of the issue. For more Error 3194 steps see: This device is not eligible for the requested build above.