iOS 12.0.1 (build 16A404) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-08T17:10:40Z. 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: cf049dbecaf5a9e0d83f8b0b0fc54efa56ba67de.zip.