iOS 13.4.5 (build 17F5034c) is an official Apple over-the-air update for the iPhone XR, released on 2020-03-31T17:20:22Z. The update package is 368.1 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: 57c7dc1725cff31144bd86a3a258db07fc9fe3db.zip.