iPadOS 11.3 (build 15E5201e) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-03-05T18:13:54Z. The update package is 283.15 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: f452f5c3fc4fc5a632e97f5c0d63d666e4e6a70f.zip.