iPadOS 11.4 (build 15F5079a) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-05-17T17:02:08Z. The update package is 252.5 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: cd882434daa05e58599c35e64ab24dd55c9fe56f.zip.