iOS 13.1 (build 17A5821e) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-08-27T17:29:20Z. The update package is 430.42 MB. This is a delta (partial) update that requires 13.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a1a1ec67cc0d7409f6fa5f137f91a1d46ee82201.zip.