iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-05-01T17:05:39Z. The update package is 211.68 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: 4494d3295b22cf6205713924a5691834716f1933.zip.