I have an iphone 3gs which is jailbroken and tethered and usually I will have the battery life above 20%. Now it went down to 0% without me charging it and whenever i try to charge it, the phone will not boot up as there is not enough battery. Also it has a broken home button. I don't want a solution to go back to get it working while it is still jailbroken. I just want a clean reboot. Help is appreciated!