iOS 9.9.10.1 (build 14B72) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-10-24T17:00:13Z. The update package is 1.36 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 06dfaac4bf82e1b539226b470279cb610a53b584.zip.