iPadOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-04-16T17:07:53Z. The update package is 216.46 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: ba1a877081615e6daaf1f0ea6159fc63c684bfaa.zip.