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 198.01 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: ffe4c3cf6fff51eff4197d675ce5dbf168e6fa62.zip.