iPadOS 11.3 (build 15E5178f) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-02-06T18:21:17Z. The update package is 276.1 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: 6d8fda92bb5075e19ab36c1036e67bde672b571d.zip.