iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-05-07T17:10:55Z. The update package is 173.31 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 605206274adb438b0f5ea6d622938b208dd6219c.zip.