iOS 9.9.13.1 (build 17A6844) is an official Apple over-the-air update for the iPhone XS, released on 2019-09-24T17:10:51Z. The update package is 3.25 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 56be1f618ce710b5875fcd86f74dfe4957d897dd.zip.