iPadOS 8.2 (build 12D508) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-03-09T18:49:03Z. The update package is 585.28 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: f2fd11162480f60453a4453271cef0134c4f0d2c.zip.