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 1017.02 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d231c0cca810bab22ae6bacb5eccf2c8ce68d9c3.zip.