If you find yourself in a situation where you want to reset the parental controls on your Nintendo 3DS but don't have the PIN, you can follow these steps to try and resolve the issue:
1. Start by navigating to the System Settings menu on your Nintendo 3DS home screen.
2. Scroll through the options and select "Open Parental Controls."
3. When prompted for the PIN, do not enter anything and instead select "I Forgot."
4. You will then be asked to provide an answer to the security question that you set up when you initially set up the parental controls. If you can't recall the answer, proceed to the next step.
5. Next, the system will ask you to enter the date of birth associated with the system. You can try entering your date of birth, or the date of birth you set up when you first configured the parental controls.
6. If the above steps aren't successful, you will need to contact Nintendo Support for further assistance. They will guide you through the process of resetting the parental controls, which may involve providing proof of ownership or other information to verify your identity.
It is important to note that bypassing parental controls without proper authorization is against the terms of use and may infringe upon the privacy settings set by the original account holder. It is always recommended to have the PIN or seek permission from the account owner to modify or reset parental controls.
Keep in mind that the steps provided here are based on general familiarity with the Nintendo 3DS system and may vary depending on your specific model and software version. For the most accurate and up-to-date instructions, it's advisable to consult the official Nintendo 3DS user manual or contact Nintendo Support directly.