iPadOS 9.9.11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-03-29T17:10:46Z. The update package is 1.41 GB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b14f028a878037814b5ff9d449ce9a2756221562.zip.