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 371.1 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: f5f202277e84aa36c2cd700bc59d7f17103af784.zip.