iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-09-12T19:06:22Z. The update package is 1.18 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: 53acc3f43896a70ad96c0002530bc5b0d12104cd.zip.