iOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPhone 6+, released on 2016-03-21T18:56:28Z. The update package is 436.62 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e7e66be7d29f8a585b5ba5dd920a914b46335a51.zip.