iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 6, released on 2018-09-12T19:11:11Z. The update package is 1.32 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 08e0f97bad3987bf834dc9150be84c8a2fd45917.zip.