iOS 9.0 (build 13A4325c) is an official Apple over-the-air update for the iPhone 6+, released on 2015-08-06T18:44:17Z. The update package is 487.17 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b7697938a422059e84672734a717a94ce2f71037.zip.