iPadOS 11.4 (build 15F5037c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-04-02T17:06:40Z. The update package is 234.41 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: 54bfbb87b1ff67e8796f52c2906800469de9eab6.zip.