iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-03-29T17:10:29Z. The update package is 590.96 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: bdccefdd8e55cc4e97a3d7990de6a8e5b63b02b4.zip.