iOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-10-09T17:05:41Z. The update package is 325.1 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: 0a0eca27465ab6189a8b37ccdb083a2a3affe6e6.zip.