iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-05-01T17:05:45Z. The update package is 180.84 MB. 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: 3084df57bc1b41a97d0598105202d78950a058b7.zip.