iOS 9.9.10.2.1 (build 14D5027) is an official Apple over-the-air update for the iPhone 6s, released on 2017-01-12T21:11:45Z. 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: 74a738ae20a564afd8e2a487aa0b39e31d9b562a.zip.