Assassin\'s Creed II + Bejeweled Twist , black screen -- m3i zero

hey so i bought an m3i zero card from DSCardworld.com a week ago and have been downloading roms like crazy but for some reason the two that dont work are bejeweled twist and Assassins creed II, both usa region and both stop at black screen after load. i think im running firmware m3 sakura 1.42 , or at least thats waht it says when i start up the card... not too sure.


ne ideas?

btw tried re-formating micro + redownloading games from diff source.
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.......any1? >.>