iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-09-12T19:08:56Z. The update package is 1.62 GB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4f22043f00cbf73d2ca945b8090a701d5d9006a4.zip.