iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-05-29T17:14:10Z. The update package is 612.86 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c4b6ad7c324e92e505e790c8ed4b524018fc9b08.zip.