iOS 11.0 (build 15A5368a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-08-28T17:18:14Z. The update package is 51.93 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: e67c4e07834b95fcbe23ee6a21a0b297ab2f98d9.zip.