iOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-09-04T17:06:18Z. The update package is 267.44 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c9eea3358e2308c4bb09d8dcb79b30c091f19a4f.zip.