iOS 12.1 (build 16B5084a) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-10-15T17:03:19Z. The update package is 569.06 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: a1dc2b65e498d6889ddf24aab21f418f7c7134cb.zip.