iPadOS 8.4.1 (build 12H321) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2015-08-13T18:05:11Z. The update package is 738.64 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f9c30707b2e5df793b53133c4c0f2bd1abe43524.zip.