iOS 9.9.13.0 (build 17A577) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2019-09-19T17:08:24Z. The update package is 3.46 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: 9de7da340dfff205d7d3b8608b3abd917e83e66e.zip.