iPadOS 9.9.15.6 (build 19G6071) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2022-07-20T17:20:41Z. The update package is 3.93 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: 8f088d37b5c955ff057f7dc4c1ec764e032195b6.zip.