iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-12-05T18:09:55Z. The update package is 483.69 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 41388c5c58a1984a6f42c689cdeab34f90b414a8.zip.