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 887.64 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: 01f08f63c99d454b9755eb048562b38ce0ee0b19.zip.