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 2018-03-29T17:10:51Z. The update package is 1.4 GB. This is a delta (partial) update that requires 9.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bd0162a277891e0699e3867158dfa7a9d45f8dea.zip.