iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-09-12T19:08:51Z. The update package is 1.52 GB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 17a432fc36e46df9b8d9fc5bfba233a650a88948.zip.