iPadOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-03-16T17:05:02Z. The update package is 50.15 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: 10056c01858c29e5194143282cfbbb8b65a183dd.zip.