iPadOS 9.9.11.0 (build 15A5370a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2017-08-31T16:56:13Z. The update package is 1.77 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: 255ecdd6c03670673556aac214082f93964dc51e.zip.