iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone 6s, released on 2018-01-08T18:18:19Z. The update package is 314.04 MB. This is a delta (partial) update that requires 11.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8ae339fa1b694921df7b674491b090bb6d0a2af2.zip.