iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-05-29T17:13:26Z. The update package is 581.52 MB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f5f4ef07e6062481a7dd0651a5fc58998a9b82ca.zip.