iOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-03-03T18:20:11Z. The update package is 779.91 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: 2c79818a0464c64ab7abec65cb7e764f3bfeda55.zip.