iOS 12.0 (build 16A5354b) is an official Apple over-the-air update for the iPhone SE, released on 2018-08-13T17:04:01Z. The update package is 1.21 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9cdbe1d7ff0e2f0fea851165eabfcc1cf04ce1da.zip.