iOS 12.0 (build 16A5357b) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-08-15T17:06:55Z. The update package is 1.42 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7ad6e53fefbfb4403c3f500f9fcdf2fd289cad4f.zip.