iOS 12.0.1 (build 16A404) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-10-08T17:09:59Z. The update package is 1.54 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 81c75316608afad561aedde852bf80ca9913555e.zip.