My M3DSREAL has the last update, 4.9 of the firmware. I'm playing on a DS Lite. The only game that freezes is Inazuma Eleven 1, Inazuma Eleven 2 and also the Ogre Version (3), both don't freeze.That is a really old flashcard! Have you checked if it have any update available? Could be triggering some sort of anti-piracy (or just working unreliably enough for the game to crash), and maybe an update could mitigate that.
Also, are you playing on a DS/DS Lite? If you are on a DSi and above, you could try nds-bootstrap via TWiLight Menu++, its capable of playing that game just fine without problems.
Get the latest TWiLight Menu as a replacement firmware.That is a really old flashcard! Have you checked if it have any update available? Could be triggering some sort of anti-piracy (or just working unreliably enough for the game to crash), and maybe an update could mitigate that.
Also, are you playing on a DS/DS Lite? If you are on a DSi and above, you could try nds-bootstrap via TWiLight Menu++, its capable of playing that game just fine without problems.