iOS 9.3 (build 13E6233) is an official Apple over-the-air update for the iPhone 6+, released on 2016-03-21T18:55:24Z. The update package is 1.58 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6ec5dec43c04c6e84e77487afea919bf051fa88a.zip.