iOS 9.9.10.2.1 (build 14D5015) is an official Apple over-the-air update for the iPhone 6s, released on 2016-12-20T18:02:17Z. The update package is 1.7 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b4fa96b5cc2645faf28ee6a405bd900b423d724.zip.