iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone SE, released on 2018-09-12T19:12:10Z. The update package is 1.34 GB. This is a delta (partial) update that requires 11.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b7291bcd0963bf23045e7ba0a9b4f7c3bfab42e3.zip.