iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-03-29T17:06:30Z. The update package is 704.15 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 617faa72ef9699e959771b97f7428e745caaa28f.zip.