iOS 9.3 (build 13E5214d) is an official Apple over-the-air update for the iPhone 6+, released on 2016-02-22T17:47:42Z. The update package is 158.55 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 79b36df5b24ac2112965ae1ab921a734dc7afc43.zip.