iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-05-29T17:15:01Z. The update package is 688.71 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 54db99513365af57809b0f21fddbbffb38a64fe7.zip.