iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-12-17T21:06:03Z. The update package is 79.62 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: 8e74489a97a9fab8b31fdef61ceed1ab0afb155d.zip.