iPadOS 9.9.11.3.1 (build 15E302) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-04-24T17:08:26Z. The update package is 1.35 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a70f8df1a1437f5c201eff7f79b69849680c78a8.zip.