iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-03-29T17:10:44Z. The update package is 709.67 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4074be03989dfbbf9ebadc0499b24c78ce5b9666.zip.