iOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPhone XS, released on 2020-02-26T18:17:50Z. The update package is 902.29 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: c38b41ce9359c6454883acf49b1cd7cac69409e2.zip.