iOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPhone X (GSM), released on 2019-05-20T17:07:15Z. The update package is 80.06 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c2cb2db11624fb2c05686a0eeaa96dcabfaaafa5.zip.