iPadOS 8.3 (build 12F5047f) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-03-12T16:56:07Z. The update package is 54.71 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: 3f911d4418bf7b2d10268ef5a0257f2c521b935e.zip.