How to update DS firmware

for some games I can't choose the language.Some people give me the advice to update the DS firmwareHow can I do that?I use the latest software for my m3real card

don't think you can update the DS firmware, they probably meant update your flashcart firmware. Make sure you have the correct language firmware on your flashcart, and that your DS language is set to english. Failing that, the rom may need modifying to access the english language files, or in some cases may not contain english at all.

In normal circumstances, you can't upgrade the DS firmware.

ok, I thougt so, I have the latetst software for my m3real card