iPadOS 11.4 (build 15F5037c) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-04-02T17:06:42Z. The update package is 243.33 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: 0f28faefbcf78d92274d6e587f2da9edd5dc43e8.zip.