iOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPhone XS, released on 2020-02-05T18:17:29Z. The update package is 829.45 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: bbbf1074a40554a4467186d659cc4f586ad6d86c.zip.