1st ull need 2 go 2 http://downloadfreeroms.kamranweb.com/2010...bender-usa.html where it tells u exacty wat the problem is bcause dsi roms and ds roms r different
ds roms r compatible with all of the ds whereas dsi is EXCLUSIVLY 4 DSI
i had the same problen on my ds (bcause i dropped a few times ) and have 2 blow into a cartridge slot as well but it wasnt a problem after a while. but maybe trying a diferent brand that IS NOT FAKE might help or maybe a new ds