iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-05-29T17:13:54Z. The update package is 238.8 MB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1102da66f11212631028d9e33f0eceff1939a929.zip.