iPadOS 12.0 (build 16A5365b) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-08-27T17:02:22Z. The update package is 1.17 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0298e91183e9f64ea2cd26ad6eb43b84ada87f77.zip.