iPadOS 11.3 (build 15E5211a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-03-12T17:05:38Z. The update package is 211.25 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5ac5be37538310fb00f3558de9eb981f99c8a437.zip.