iOS 9.9.10.2 (build 14C5090) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-12-05T18:00:35Z. The update package is 1.59 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: 78cb45a591cea3dc01d132f26c75cd2346317de4.zip.