iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-05T18:11:08Z. The update package is 1.38 GB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5ca1a6e200b9f1ba849ce5bb3a012ea0057405d5.zip.