iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2018-05-29T17:15:26Z. The update package is 608.85 MB. This is a delta (partial) update that requires 11.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4d000cd0834296741961c56e6f1bb97272595532.zip.