iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-05-01T17:05:50Z. The update package is 213.3 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: 7cda48a55ad8fde111f066f700697dcd2574f195.zip.