Hardware ds won't load

[kcblues]

Hi
I bought an RV card with 1 game on it worked ok. I have tried to put another set of games on it that all work with my other R4 and now it won't work. Is there a system file or something thats different for the new cards to the old ones?

 

[Rayler]

I'm not too sure what an RV is, and why you posted this in the GBA hardware section, but I recommend plugging it in your computer, backing up the games and saves, formatting it then putting the games back on and a newly downloaded system settings