iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-05-01T17:05:54Z. The update package is 214.96 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: db56025cc6e0ce128ec11d317ab8d2e21ca34c32.zip.