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 208.67 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9462fedab98004f11daae16827fd3a1eb86872bf.zip.