iOS 11.0 (build 15A5370a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-08-31T16:56:15Z. The update package is 35.71 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: 78414737b0f3fe916989802998db28551d7b5861.zip.