iOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone X (Global), released on 2020-03-10T17:21:22Z. The update package is 779.85 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fc45c121859865c50a0bd8f30c0d733c1511368d.zip.