Certain Games Don't work on the M3.

Hello, I was just curious about a couple of things involving the M3 for the DS. Most of the games that I download fir the M3 work well, but then there are certain games that are more desirable than others, for example FFXII Revenant Wings, or NFS Pro Street. Anyway, my issue of concern is why do certain ROMs not work? Is it my firmware, or possibly my DS, or even the ROM, itself? I've tried every ROM under these titles, and they say Cannot read file, please re-insert card. So if anyone knows how to resolve this annoying problem, thank you in advance.
Corcor7

This is in the wrong section. Did you extract the roms from the archive?

if you extracted them it's likely the firmware.

Sorry, You're right. I've learned a lot about the M3 since my first post. It was my firmware, and I've updated the software up to date, and now the NDS files work correctly. Now theres a newer problem: the Cartridge detection code... I hope a new M3 Firmware comes out, soon...