iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-05-01T17:05:41Z. The update package is 180.27 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: 8433b9a761d23fffb145daf6f9dbe934e1ee615b.zip.