iOS 11.0 (build 15A372) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2017-09-12T19:10:53Z. The update package is 1.03 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 237fb01c6cdbc614451e04407531fc204d362c37.zip.