iPadOS 11.3 (build 15E5211a) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-03-12T17:05:26Z. The update package is 218.54 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: 31d3174a21262e206c1d50e650c5a4fe321e0a2e.zip.