So, I got my Supercard DSTwo today. I updated the firmware to 1.16 and the latest EOS, and everything worked fine. I am on 4.2.0-9U However, I turned off my 3DS, and now it will not see an icon for the DSTWO when I put in the cart. In addition, the 3DS will not start up when I have the DSTWO in it. Just a black screen. I tried formatting and installing the firmware on a DS Lite, and still, nothing. The DSTWO works on the DSLite. Any ideas?