iOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-09-10T20:24:56Z. The update package is 378.79 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: 7bd1b0cbfbce37b530d5b88749f11d3873398e5d.zip.