iOS 11.0 (build 15A5354b) is an official Apple over-the-air update for the iPhone 6s, released on 2017-08-14T16:54:31Z. The update package is 249.77 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: 70522afb25c918e78cc31db0995955bf0d4b07ae.zip.