iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-03-29T17:11:14Z. The update package is 599.63 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: fbe75ebcd6b579bd954efd1f88d03e4d6863848c.zip.