iOS 9.9.11.2 (build 15C5111a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-11-28T18:00:30Z. The update package is 1.72 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: 1afe2942fddf914792f757fec93b39c07db295fd.zip.