Step 1. Download the
Step 1. Download the ong>iOSong> ong>11ong> IPSW files for your iPhone/iPad/iPod. Please download the right IPSW file according ong>toong> your device model. Step 2. Connect your device ong>toong> computer via USB cable and launch iTunes. Step 3. On iTunes window, please click "Summary" tab on the left panel. Step 4. Then please hold the "Shift" key in Windows or "Alt/Option" key on Mac, and click "Resong>toong>re iPhone" butong>toong>n on iTunes window. Step 5. Then you might browse and select the ong>iOSong> ong>11ong> IPSW file that you have downloaded just now. Then iTunes will start ong>toong> install ong>iOSong> ong>11ong> on your device immediately.
When the installation process is complete, you can resong>toong>re data from your iTunes backup ong>toong> get back your files.