Help with patched cdr games!!!!plz

[Nosferatu Zodd]

I have a no swap modchip, a magic 2 i believe, i can play some cdr games like slugfest and timesplitters, BUT i try nba street and i get the red screen, maybe i have a patched version of the game and need to remove the patch or something i dunno. what cani do to run nba street? Also i made a copy of a winning elevn back up that worked and my copy get the red screen again. WTF am i doing wrong? Plz help complete newb. THNX