iOS 9.9.13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2020-04-15T17:15:48Z. The update package is 3.83 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: 78cc69d6d9e8cad6a299883cb93db61002e16f81.zip.