iOS 10.3.3 (build 14G60) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-07-19T17:03:37Z. The update package is 747.82 MB. This is a delta (partial) update that requires 10.0 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 475a2c5a3f0ae494e265bd1d40a5e74a6440dc01.zip.