DSI 1.3e

I have buy a nintendo DSi with firmware 1.3e , now i don't understand witch flash card buy, some item is for firmware 1.4 so is necessary update my Dsi?
thanks a lot for answer

Any will work on 1.3. You don't need to update to 1.4 to run a flashcart that works on 1.4, it will work on 1.3 as well.

ok now i understand.
Searching on net i find some flascart with firmware upgradable an other no. I tnink it's better one upgradable, is it correct?

Replying to #3

[color=purple][b]Yes it is, the best one you can get now is a SupercardDSTWO.

or the second runner up, Acekard 2i

Thanks a lot for answer :)