iOS 9.0 (build 13A4305g) is an official Apple over-the-air update for the iPhone 6, released on 2015-07-21T19:26:10Z. The update package is 314.42 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: a5c022a0ff7181ad7a71e7a49c4cf97960ee7bbe.zip.