iPadOS 12.0 (build 16A5288q) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-06-05T09:51:51Z. The update package is 1.14 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 12df4e7ba32d2f4ad3e86d8f08a64a1b1435854a.zip.