iPadOS 11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-05-14T17:16:45Z. The update package is 222.69 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: 87e965da08f13f3e2064069eecb09d28526bed84.zip.