iOS 11.0 (build 15A5327g) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-07-24T17:24:36Z. The update package is 326.03 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a9d712b1b389f6aec3222f2bcb1db3a92ace7908.zip.