Step 3. Click "Check for
Step 3. Click "Check for ong>Updateong>s" option on the right panel, and click "Download and ong>Updateong>" and enter your iPhone/iPad password if asked ong>toong> install the latest ong>iOSong> ong>11ong> onong>toong> the connected iPhone immediately.
Method 4. Install ong>iOSong> ong>11ong> ong>Updateong> on iDevice Manually with IPSW File To update ong>toong> ong>iOSong> ong>11ong>, you can also manually download the ong>iOSong> ong>11ong> IPSW file ong>toong> update your iPhone/iPad/iPod. This allows you ong>toong> fix the "ong>Softwareong> ong>Updateong> ong>Failedong>" problem while you don't need ong>toong> contact Apple's server ong>toong> download the firmware file. Now please follow the instructions as below ong>toong> download and install ong>iOSong> ong>11ong> using IPSW file. Note: Before the process, please make sure you have backed up your data ong>toong> iTunes ong>toong> resong>toong>re data from iTunes backup later in case of unexpected data lost.