iOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6s, released on 2017-01-23T18:08:33Z. The update package is 1.13 GB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 60c6a8cfef8b0f525d5c9c7ef486685b4d23d6a7.zip.