iPadOS 9.9.12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2019-03-27T17:06:11Z. The update package is 2.31 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: 9d4640fe6298e73de6ad7463ab5b96c3e32911d3.zip.