iOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPhone X (Global), released on 2019-04-22T17:08:49Z. The update package is 366.51 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a298a17cc23ed101760f10344c044e0b7ae03fc0.zip.