iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-30T17:17:27Z. The update package is 1.28 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e7fa39dd725ccae87268aa9ef5968e480edd1e1b.zip.