Does it boot okay normally (not in recovery mode)? I'm assuming it connected okay to the usb burning tool and you got the Burning Successful message at the end of flashing the firmware. According to the guide the first boot after the firmware flash can take 'some minutes' but I assume you've waiting a while. The only thing I can suggest is to try the usb burning tool once more (make sure you use normal erase and follow the guide step by step). If you still have no luck after that then return it.