Short Answer: You can't (With Software Modification)
Long Answer: Your options are these.
> Sky 3DS (If you want to play games, you can't run homebrews or native emulators with it)
> Ninjhax 2.0 (If you want to use homebrews and native emulators, you'll need Cubic Ninja)
> Future Ironhax exploit (You'll need the game "Ironfall Invasion" from the 3DS Eshop, located on the indie section, and wait until smealum (A famous 3ds hacker) release the exploit for this game, you can only use homebrew with it though)