iOS 11.2 (build 15C114) is an official Apple over-the-air update for the iPhone 6s, released on 2017-12-02T08:14:24Z. The update package is 310.69 MB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 62d7c08b50ed620a4d17594b9764dc0b0a61dad0.zip.