iOS 11.0 (build 15A5362a) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2017-08-21T16:44:30Z. The update package is 96 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: 88d4a0c27502d903fc1c9dc3974c922e5d38f47d.zip.