iOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-02-05T18:17:27Z. The update package is 756.32 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: 34ce959ceee97e0f6a23301d4b2f0651306f9ba2.zip.