iOS 11.2 (build 15C114) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-12-02T08:14:27Z. The update package is 1.24 GB. This is a delta (partial) update that requires 10.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1c12c0a1ac6d92311cefc3c817cb4383ef56fcc8.zip.