iOS 9.3 (build 13E5200d) is an official Apple over-the-air update for the iPhone 6+, released on 2016-02-08T17:48:29Z. The update package is 138.89 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: 307c12065798539e142ca170ae73fe9f672a41a0.zip.