iOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPhone 6, released on 2015-09-23T17:55:24Z. The update package is 1.35 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4fefcdcbf4700f63ded5917f457406c89973d4e9.zip.