Q: I want to pretend like I never had a Nintendo DS Lite by deleting ALL of the data on it. How do I do that?
A: You can reset the System Settings to a limited degree. If you remove the battery from the DS Lite** most of the settings will be lost. The language setting and WFC ID will remain. To remove the WFC ID you could go in and clear all of the connection settings. **NOTE: requires a size "0" screwdriver