iPadOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-04-16T17:07:30Z. The update package is 216.39 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: 300dceef29682e740c37e53a052dff3f9d527323.zip.