iOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-02-05T18:17:28Z. The update package is 755.96 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: 3dd281b1d956c28aa0ae2014256029130388c72a.zip.