Any flashcart that works today is likely to be rendered a brick by an upcoming software update. Welcome to modern console gaming: ever changing, ever more crackproof. The exception is Nintendo DS code, for which flashcarts still work because the DS fw is fixed.
>> Any flashcart that works today is likely to be rendered a brick by an upcoming software update.
IIRC, some of the flashcarts have an Emunand feature that lets you play games requiring a newer version (i.e, 6.x) on a 3DS without updating your firmware from 4.x (4.x is required to support the current crop of flashcarts)
