iOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-09-18T17:06:59Z. The update package is 124.96 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: 3b7eccab29d7ec1a1d5ba505437ce5bcadacd40c.zip.