iOS 12.0 (build 16A5362a) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-08-20T17:05:32Z. The update package is 1.33 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b16f90cdd43f0caae6b82e5192dd51693fc6519c.zip.