iOS 13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPhone XS Max, released on 2020-04-15T17:15:43Z. The update package is 382.18 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: d803efa9fb0ae7bd0cc5c5a5fd1627b6431624e4.zip.