iPadOS 9.9.15.3 (build 19D6050) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2022-01-26T18:14:10Z. The update package is 3.7 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: 99c68555f6f451cde615e9a646091bb148521a98.zip.