iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-05-07T17:10:59Z. The update package is 247.04 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: 4e806830faf69b0b97342eacda93a7613d4fbce7.zip.