iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-03-29T17:10:58Z. The update package is 599.64 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5868f06ef31b9d54e6514068ddff10e56258ba5c.zip.