iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-30T17:17:28Z. The update package is 342.4 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8700b529a1374cfe5345d7a1036f0084e29bd916.zip.