iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-05T18:11:11Z. The update package is 1.32 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1b7cf7842f2d39cb069e9c476b22cd2f3de5c549.zip.