iOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-02-26T18:17:49Z. The update package is 778.97 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: 1ee3e7a32932ea7860e8cb2cfec4d8d7323fd105.zip.