iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-05T18:11:09Z. The update package is 1.35 GB. This is a delta (partial) update that requires 11.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1e107fbd8ec82f0f9c909243b48c1a3c6553becf.zip.