iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-05-07T17:11:20Z. The update package is 248.55 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: 9119e7cdf5a6fd130d7c1d4f869f6384d11a292e.zip.