iOS 9.3 (build 13E5200d) is an official Apple over-the-air update for the iPhone 6, released on 2016-02-08T17:48:30Z. The update package is 137.98 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: 77ac199ed80e7d6ad61b3e943c0593b597dece7a.zip.