iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-09-12T19:06:08Z. The update package is 1.58 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bc1cc0f30d6f8f37d3d22b3a822be41f1a80aa54.zip.