i received my r4 a week ago and it hasn't worked once yet. i loaded and reloaded the kernel onto my micro card and formatted and i still get a frozen screen at the warning when you first turn on the ds. i bought the unit from a reputable company and everything seemingly was just fine until i tried to use it. can anyone help me???? are there any r4 experts that can solve my problem?? please ask me anything that might help solve this problem. thanks for the help!