If you're looking to reset your Nintendo 3DS to its factory settings, there are a few simple steps you can follow. First, make sure to back up any important data or game saves, as this process will erase all data on the system. Then, navigate to the System Settings on your 3DS and select 'Other Settings.' From there, choose 'Format System Memory' and follow the prompts to complete the reset. Once the process is finished, your 3DS will be restored to its original factory settings. Remember to re-download any digital games or updates that were previously on the system. With these steps, you can easily reset your 3DS and start fresh.