iOS 9.9.13.6.1 (build 17G80) is an official Apple over-the-air update for the iPhone 11 Pro, 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: 32f53d00bd30630e4744c3a0a812b2f33d1c4123.zip.