iOS 9.9.13.6.1 (build 17G80) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2020-08-12T20:32:54Z. The update package is 3.92 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: fa0f8fa09bf6cd14523ff1f0128b9f9f8b046ff5.zip.