iOS 13.4 (build 17E5233g) is an official Apple over-the-air update for the iPhone XS, released on 2020-02-19T18:24:49Z. The update package is 438.87 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 72b36aaf5f48f4a0c17a5c5317cf74b53c6fbdfb.zip.