What is error 3194 on iPhone 4?
I tried to reset an unlocked iPhone 4 to factory settings, and the phone froze and gave error 3194.
第四代iPhone。维修过程直观易懂，但前置玻璃和LCD面板无法分开，只能作为同一零件更换。GSM版本， 8, 16, or 32 GB 容量 / 型号 A1332 / 黑色或白色
me too was hit by the 3194 error on my iPhone 5 but the Hosts file solution didn't work, in my case it was the Comodo firewall on my computer that was causing the issue. I uninstalled it and the problem was solved ! I found the tutorial on hubpages to be effective most of other tutorial including the one from Apple forum were talking about this Hosts issue only without thinking that it is affected to jailbroken devices only.
If have a jailbroken device and trying to downgrade your device there chance for popping up 3194 error .This can resolved by using TinyUmberella
(ipsw is the firmware you have download Eg: iPhone5,1_7.0.4_11B554a_Restore.ipsw .You can search you device firmware in google search )
Now itunes will restoring your device firmware
mike, try this:"Error 3194 seems to be triggered when unsigned firmware is used, often during an iOS downgrade or even during some restores. Here’s how to resolve the error:
Fix Error 3194
The fix is the same regardless of what operating system you are using:
Locate your hosts file, in Mac OS X this is /etc/hosts and in Windows this is c:\windows\system32\drivers\etc\hosts
Open the hosts file with Administrator privileges
Add the following lines to the very bottom of the hosts file:
Connect your iPhone to the computer
Put the iPhone/iPad/iPod into DFU mode by turning the phone off and then holding down the sleep and power button for 10 seconds, then release the power button but hold onto the home button until iTunes tells you that the device is now in recover mode
Use the iTunes Restore feature as usual with the iOS device
Once your iOS update is finished, remove the “220.127.116.11 gs.apple.com” line from your hosts file again so that iTunes can properly update as usual." from here. Also, if you are using Windows, disabled the firewall. hope this helps, good luck.