iOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPhone X (Global), released on 2019-03-27T17:06:19Z. The update package is 352.98 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a6a1ea8cc8c5adc4566635f3d73dde6d348f5b13.zip.