iPadOS 11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-05-14T17:17:02Z. The update package is 252.55 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: e7cab12a57ac8b28d0569b066a9c7632680bf3b6.zip.