iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 6+, released on 2018-09-12T19:10:54Z. The update package is 1.44 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0bff60297717cf53d28fa53543c34b2ebc2bba4d.zip.