iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone 6, released on 2018-01-08T18:17:58Z. The update package is 313.96 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 168e3c4f1ffc79e562fecd1118deec7834025f19.zip.