iOS 12.1 (build 16B5089b) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-10-22T17:01:52Z. The update package is 193.18 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4e8bacd8ff02fe2465e248805c7ef15bbe9af288.zip.