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Fix iTunes 3194 Error while Downgrading iOS 5 Using TinyUmbrella

Hi to all, I got my iPhone 4 upgraded to iOS 5 last week and since I have a saved iOS 4.2.1 SHSH blobs, so I tried to downgrade it using TinyUmbrella but I always end up in iTunes error 3194. I know that it can be fixed by tweaking the HOSTS file, but I am not sure how to do it. Please help. Thanks.

Asked by: Stevie from Boston, Massachusets

Hello Stevie, tweaking or editing iTunes HOSTS file in order to bypass iTunes error 3194 when downgrading iPhone firmware is as easy as 1-2-3. All you have to do is direct your iTunes to Saurik’s Cydia Server. Anyway, you can check the tutorial posted below on how to do it:

How to Edit HOSTS File on Windows:

Step 1: Launch Notepad or any text editing tool. Now, launch windows explorer or press Windows + E, navigate to C:WindowsSystem32driversetc and then in ETC directory open the HOSTS file with Notepad.

Step 2: Add to the end of HOSTS file and then save it.

How to Edit HOSTS File on Mac:

Step 1: Click on Go -> Go to Folder and then enter path /etc 

Step 2: Open HOSTS file via TextEdit or any text editing tools and then add at the end of the file.

Then follow this guide to downgrade your iPhone on iOS 5 back to iOS 4.2.1 using TinyUmbrella. However, you should be noted that some iPhone jailbreakers who downgrade their devices from iOS 5 back to iOS 4.3.x or iOS 4.2.x were experiencing “No Service” issue. If you get this error, I would recommend you to restore your iPhone back to iOS 5 and then jailbreak it using Redsn0w 0.9.9b8 as there’s no fix for this error at the moment.

Fix iTunes Error 3194

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