RealHotStuff has the card updated I'm assuming the internals of the card not the software so it's ready to boot on 3DS firmware 2.0. They also sell it bundled with a 2 gig Micro SD Card, I will leave a link below.
You can also call them before ordering and ask if they can set it up for you software wise before they ship it out for you they might do it I'm not sure. Worth a shot, best of luck to you.
http://realhotstuff.com/supercard-dstwo-microsd-bundle-p-500.html