iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2018-03-29T17:06:26Z. The update package is 577.95 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8d1836733deeb49d6030257705e648c3053d4db4.zip.