iOS 13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPhone X (Global), released on 2020-04-15T17:15:37Z. The update package is 377.04 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 21dc959622087d8d4a7c5d0dcff5cd2f6196f2aa.zip.