iOS 12.1.2 (build 16D5024a) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-12-10T18:09:05Z. The update package is 320.95 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d6288410036bbf49bf806cf3e1088cff1eabb3e2.zip.