iOS 9.3 (build 13E5181f) is an official Apple over-the-air update for the iPhone 6+, released on 2016-01-14T18:01:25Z. The update package is 28.78 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: 790eb1e327ab0f2495bf4951bcc71cf80650707a.zip.