If you have a notebook or wireless card try this, it worked with me:
1- Download Connectify Hotspot 2015;
2- after the install, open the Connectify Hotspot 2015, generate a hotspot and put the password and Connectify-me information into 3ds;
3- Test the connection, if everything works fine the 3DS IP will appear inside Connectify Hotspot 2015 and you can use internet into 3ds browser;
4- Open the CFW 3dsprofile + L ;
5- Open some random page in the 3ds browser to make sure that the 3ds is connected with the PC;
6. Put Connectify Hotspot 2015 3ds IP inside run.bat and it will work within the first try.