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  • How to Downgrade AT&T Galaxy S3 SGH-I747 to Android 4.1.1 Jelly Bean [Back To Stock]

      WARNING! Warranty may be void of your device if you follow the procedures given on this page. You only are responsible for your device. We won’t be liable if any damage occurs to your device and/or its components.   AT&T GALAXY S3 SGH-I747 OFFICIAL JELLY BEAN 4.1.1 FIRMWARE Before you begin with guide instructions below, make sure […]