iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-03-29T17:07:24Z. The update package is 735.08 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: f6c1ae5c3783abad6715cd54b4962220e9c00596.zip.