iPadOS 12.2 (build 16E5227a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2019-03-18T17:06:45Z. The update package is 107.32 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3628b7c91df6c3556968575d6405be6c9b00ec2a.zip.