iPadOS 9.9.12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2019-03-27T17:06:10Z. The update package is 2.28 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: 18d6b4243e6f2fd7067550f35cb0d243d1625350.zip.