iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-05-01T17:05:50Z. The update package is 173.54 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 684819e4070cb34f7a56dda4ebdf82f7b2d4c5ff.zip.