iOS 9.0 (build 13A4305g) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2015-07-21T19:26:09Z. The update package is 255.04 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: 5379f8f12f3b3d80a10d1600d2cdff5576733bef.zip.