iPadOS 12.2 (build 16E5201e) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2019-02-19T18:06:39Z. The update package is 638.23 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f286ee2556836764c6913bd6540f1af68dd89c61.zip.