iOS 11.0 (build 15A372) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-09-12T19:09:49Z. The update package is 1.03 GB. This is a delta (partial) update that requires 10.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6bf097ef0261dc64fab6b55e057024ca2a9d7dac.zip.