iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-30T17:17:25Z. The update package is 1.32 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d42c23cf9fcf5554993455a5c5775d4c33038423.zip.