iPadOS 12.2 (build 16E5181f) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2019-01-24T18:05:33Z. The update package is 611.14 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: 4155ad8abe90621a87c8ec69aad36cf0dd3fb884.zip.