iOS 12.0 (build 16A5362a) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-08-20T17:05:23Z. The update package is 208.23 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: 85273372b0c31c70ff99d5c83be8f23162af282b.zip.