Here is another 3DS save homebrew released by crediar, it is working on both 3DS and ds. DSaveManager can be used to transfer savefiles from DS/3DS games via wlan to a PC.
In order to make a 3DS game cart fit into the DS/Lite you will need to sand/cut off the notch on the corner of the 3DS game cart. This tool currently only backs up saves, it will not restore them.
crediar has requested the program not be re-hosted, so please visit the 3dbrew site to download it.
- 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!
Download: DSave manager