iOS 13.4.5 (build 17F5034c) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-03-31T17:20:20Z. The update package is 366.66 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: 77cf6680181fab23d38a7cab627637dd968b0c12.zip.