iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-05T18:11:07Z. The update package is 1.68 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 87afd24715ddab7f2e86c0b0349a109033afbb1e.zip.