iPadOS 9.9.13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2019-12-17T18:13:17Z. The update package is 3.11 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: e2141180f2e285492b742c51a27f0f32cae782d8.zip.