iPadOS 8.3 (build 12F5061) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2015-03-24T16:54:10Z. The update package is 130.43 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: 80140a9224a283544385aa1a5d3858ad45901b78.zip.