iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-03-29T17:08:50Z. The update package is 735.69 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 413937c1e0094c48febb5f2398af473b359618d5.zip.