iPadOS 11.3 (build 15E5211a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2018-03-12T17:05:37Z. The update package is 211.19 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: e4574635622d27c9653fcbf5a334426ce3c4a2ef.zip.