iOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-09-04T17:06:17Z. The update package is 470.09 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: 01c00de483359bb707a900f7a795d264eb84554e.zip.