iOS 9.9.11.2 (build 15C114) is an official Apple over-the-air update for the iPhone 6s, released on 2017-12-02T08:14:12Z. The update package is 1.29 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1fdc29cfcfbfe59076571bb125bacc4068ed92b4.zip.