iOS 12.1 (build 16B5084a) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-15T17:03:34Z. The update package is 418.74 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bcfe4b97b7f58b782d80a1f1f498b438b93e1776.zip.