iOS 9.9.12.3.1 (build 16F6203) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-05-24T17:04:18Z. The update package is 2.65 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: 6abf0799e52a48901f2057b2fe821def95bebc20.zip.