Kernel v 1.11 doesn't seem to work or is it a bad game?

Kernel v 1.11 is supposed to give full download play support. But i still can't get download play for mario kart ds. Is it a bad game or doesn't kernel work?Any thoughts?

are you sure its not a game that requires a cart for each DS?

Yes its only a 1 card game. Thats an option it gives you.

assuming that your on about the R4 have just tested it out with mario and my sisters ds and everything worked fine think its yourgame