iOS 9.9.12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone XS Max, released on 2018-12-05T18:10:13Z. The update package is 2.58 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: 3ea04d93910c46afd10d34a13073e4a8efba136c.zip.