iOS 9.9.13.4.5 (build 17F5034c) is an official Apple over-the-air update for the iPhone XS Max, released on 2020-03-31T17:20:22Z. The update package is 3.82 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: 42dec1e24cec7065a73e5090a5cde0399c6a8bf7.zip.