When i can download iOS7 Beta 7 GM?

Anyone can help me with link or developer account? IPhone 4S

The GM hasn't been released yet.iOS 7 won't be released to the public until late September at the earliest, but you can install it now if you register your device's UDID with a developer account through a site like http://www.udid.in/.It's $5, and then you can try out the new OS before everyone else. That's how I got it on my 4S.