iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-05-29T17:14:49Z. The update package is 599.37 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: 97480baf2d8854e30ddabf4db986f77add5f596e.zip.