iOS 12.0 (build 16A5364a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-08-23T20:07:56Z. The update package is 1.35 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: 4b43b599797491685a99e2ca2ce5707c8f999f6e.zip.