iOS 13.4.5 (build 17F5034c) is an official Apple over-the-air update for the iPhone XS, released on 2020-03-31T17:20:21Z. The update package is 370.63 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: d9feaa92f01e3c99a56cfc81fb6395741d0f882f.zip.