iPadOS 8.4 (build 12H5143) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2015-06-30T15:51:02Z. The update package is 1.49 GB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1b350c15c034bc21cd76826014e4cc4f216e51e3.zip.