iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone SE, released on 2018-09-12T19:12:12Z. The update package is 1.32 GB. This is a delta (partial) update that requires 11.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 26297b27033d4f2d63a4f090c87a46bf293b53d5.zip.