iPadOS 11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-05-14T17:16:50Z. The update package is 247.06 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 36d3258419ccb6204bca16b1c4f7da66f550c6ac.zip.