iPadOS 8.3 (build 12F69) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2015-04-08T17:56:08Z. The update package is 722.21 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fe5d3ae90e6298ab97bb2cc78a20adcdc505b2ac.zip.