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  • Back to Stock: Downgrade T-Mobile Galaxy S2 SGH-T989 to Android 4.1.2 Jelly Bean with Official Firmware

      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.   T-MOBILE GALAXY S2 SGH-T989 OFFICIAL JELLY BEAN 4.1.2 FIRMWARE Before you begin with guide instructions below, make sure your android […]