Ok is this a micro sd card issue? I've been trying for about 5 hours to get the dstwo working on my 3ds. (Version 2.1.0-4u. Also, consider the fact that i'm a newb on this subject) After I reached my witt's end I tried to use the dsfat that we have in the house. I get the same message from that too. So that surely must be a micro card issue right? Its an amazon brand microsdhc. Really sucks if I have to return this.