iPadOS 9.9.13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2019-12-17T18:13:09Z. The update package is 2.86 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: 8994cfdd43def8b96aafd3d2235ba171fadfc6a9.zip.