iPadOS 11.3 (build 15E5178f) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2018-02-06T18:21:22Z. The update package is 290.93 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: 14db426f4bd54615df9d3b3d3a50b43e3995968d.zip.