crediar offers version 0.1 of " DSaveManager "utility for transferring files from a backup nintendo DS/3DS via a wireless LAN to PC.
Usage:
Setup WFC via a game
Change the IP in the dsm.ini to that of the PC running the DSM.exe (Leave a newline at the end of the IP)
Load the DSM.nds on your DS/DSLite, any method should work fine.
Follow the onscreen instructions!