iOS 12.1 (build 16B5084a) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-15T17:03:35Z. The update package is 171.46 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5ef66f018b16db948d00a46347dc24e9bc36c448.zip.