iOS 9.9.10.3.3 (build 14G60) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-07-19T17:03:30Z. The update package is 1.49 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: bce66885c74a725b5f068dfc41b41abecf2d3caa.zip.