iPadOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-04-16T17:07:52Z. The update package is 216.12 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: 9fd447323ddd482354dd7df7874c1a66895efb83.zip.