iPadOS 8.3 (build 12F5061) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2015-03-24T16:54:11Z. The update package is 133.86 MB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 769d67387c9f0c6fcd89ecf436225822d4ff502d.zip.