I need help jail breaking my iPhone 3g its running on 4.2.1 the problem is that my sleep button is broken and i can't enter dfu mode i use tiny umbrella/rec boot to get it in recovery mode. So i need help getting it into dfu mode or finding an alternative way to jailbreak it. Also is it possible to get the iOS beta on the 3g? And if you can is it possible to jailbreak it without the sleep button?