iPadOS 9.9.15.0 (build 19A6346) is an official Apple over-the-air update for the iPad Pro (12.9-inch, WiFi) (5th generation), released on 2021-09-20T17:12:58Z. The update package is 4.79 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: 2949cfdd7da7c364b675578a3bde0c57680f6436.zip.