iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone 6s+, released on 2018-01-08T18:18:35Z. The update package is 1.25 GB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 62f369e6c56b3ffa44c00c5cb68397da0c6c0967.zip.