iPadOS 9.9.10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2017-04-03T17:00:16Z. The update package is 1.13 GB. This is a delta (partial) update that requires 9.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 95218e7022afbb682af610adf947e4f510033d5d.zip.