iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2018-05-01T17:05:58Z. The update package is 214.9 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: 0784039c4dc301876cef9086b652d0fa738f9c9b.zip.