Medarot DS rom on Acekard 2i Help

I downloaded the medarot.ds rom but it just gives me a white screen when i start the game. I asked some one for the patched rom and I tried it out but it still doesn't work even though I hold the A button when loading. Please help me

Hold A=Turn off DMA Mode
Seems like this game doesn't support DMA then.
Don't know if it works for you ..