iPadOS 11.4 (build 15F5079a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2018-05-17T17:02:14Z. The update package is 42.76 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8c5cd7c7ab07aec9d3956c051ac355084d600e9e.zip.