iOS 9.9.10.0.1 (build 14A403) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-09-13T16:56:19Z. The update package is 1.36 GB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 92c7aec21b4786f0706fcec74843a0a5bb34f379.zip.