iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 6+, released on 2018-09-12T19:10:51Z. The update package is 1.85 GB. This is a delta (partial) update that requires 10.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 60f45ecd7804b0a1c48d64d335b8b996a2691267.zip.