Ace3ds team just released a new card-called Ace3DS X : http://ace3ds.com/ace-3ds-x-product.html
It has a switch to switch from 3DS mode and DS mode.
In 3DS mode, it is pre-flashed NTRBOOT and supports installing boot9strap on all 3DS consoles models & versions
In DS mode, it is the same as ace3ds plus and supports nds games
It has a switch to switch from 3DS mode and DS mode.
In 3DS mode, it is pre-flashed NTRBOOT and supports installing boot9strap on all 3DS consoles models & versions
In DS mode, it is the same as ace3ds plus and supports nds games