Apple today released iOS 11.2.2, the ninth official update to the iOS 11 operating system. iOS 11.2.2 comes almost one month after the release of iOS 11.2.1, another minor update, and a month after iOS 11.2, which brought brought Apple Pay Cash, faster 7.5W wireless charging, and a long list of bug fixes. Check more about what's new in iOS 11.2.2.  Here, you can download iOS 11.2.2 on 3uTools. 

Please remember to backup your iDevice on 3uTools in advance. 

Step 1 Connect your iDevice to your PC with USB cable, and then launch 3uTools. 

Step 2 Head to Flash & JB -> Easy Flash, select the iOS 11.2.2 firmware. If you want to save the original data, please select option "Retain User's Data While Flashing", then click "Flash".

Step 3 Wait patiently till the flashing process finishes. Normally, it would take 5 to 10 minutes to restoring.