iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-05-07T17:10:54Z. The update package is 222.72 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: 2ec5a9dd80d3dc412c2beff1c2a890004b4b1ef2.zip.