Hey guys ! I have jailbreaked my iPhone 3GS (6.1.3) using redsnow, and the battery was low when I did it. After the jailbreak process is over and redsnow was trying to rebooting my iPhone, it failed, then I removed it from USB and tried holding Power+Home for many times and charging it and nothing happens. Black (off) screen. I connected it to my laptop again and the laptop didn't recognize it (windows didn't make a "usb connected" sound) Please help me as soon as possible.. Thanks in advance !!!