iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2018-05-07T17:11:22Z. The update package is 257.82 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: 86bb3288a605214890697bebeebd9096168cad18.zip.