iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-03-29T17:10:45Z. The update package is 585.41 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: d4d2a331aa708479dc25ddd31e22d5e3edf43668.zip.