iPadOS 9.9.12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2019-03-27T17:06:18Z. The update package is 2.67 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: 348de4a77c78c35e98ea1582d5c93bd4dd677465.zip.