Or better yet, just let i Tunes or i OS update itself without trying to use the firmware files manually.If you need them, you can get the latest versions of i Phone firmware, i Pad firmware, and i Pod touch firmware directly from Apple.
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If you run into Error 3194 within i Tunes when you are trying to restore your i Phone, i Pad, or i Pod touch, you can fix it by temporarily blocking Apple’s firmware signing services.
Right click on Notepad app and select Run as Administrator.
You should now be able to successfully restore the desired older firmware (if SHSH saved).
That’s it, now try to restore your i Phone, i Pad or i Pod touch again, and you should ideally not get the Error 3194 error again.
You hit the error because you may have used a jailbreaking tool like Redsn0w at some point of time, which added the entry to the Hosts file so that i Tunes could connect to Cydia servers instead of Apple update servers.
You could try again to see if it goes through successfully.
Faced with error 3194 in i Tunes while restoring or updating your i Phone or i Pad?
In some rare cases, i Tunes seems to also throw the unknown error (3194), if there is a connectivity issue with the update server.
i Tunes error 3194 usually appears when you’re trying to restore an unsigned firmware, often during an i OS downgrade or even during some restores.
Method-I: The most predominant cause for this error to occur has been the hosts file issue in windows and mac.