iPadOS 12.2 (build 16E5227a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2019-03-18T17:06:34Z. The update package is 663.11 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f328a5f3a98f7d34d96b2f32824e8d69eb23d79b.zip.