How to Unlock Nintendo 3DS Parental Controls Without the PIN

I got a Nintendo 3DS in stock from a customer. While testing the console, I tried to format the system and got a message: "Parental controls restrict the content."

Since we buy used 3DS consoles from customers, my first instinct was to contact the customer to see if they remembered the PIN. Unfortunately, they didn't, but I've handled this before. I figured now would be a good time to write a how-to so I have it for next time, and maybe save someone else a headache in the process.

The Table of Contents

Locked out by parental controls on your Nintendo 3DS?

What you'll need:

• You have powered on your Nintendo 3DS console.
• You need a pen and paper to write down the inquiry number.
• Internet access (computer or phone)
• $0.50 for the official method, or use the free tool at your own risk.

Time needed: 5–10 minutes

Note: This is for parents who forgot their PIN or for resellers with valid stock for resale.

Choose a Reset Option

1. Pay $0.50 and get a key from Nintendo.
2. The Free Option, which is below.

The Nintendo Reset Option:

Step 1: Nintendo's Official Reset Tool

• Visit Nintendo’s official Parental Controls Reset page.
• Follow the five on-screen steps, enter your inquiry number, and it will generate a master key.
• There’s a small service charge (around $0.50), but it’s quick and official.

Step 2: Trigger the Inquiry Number

• Enter a random PIN code three times. After three tries, the system prompts you to visit the Parental Controls page. Then, enter the password for your secret question. When it asks for your answer, tap “I Forgot.”

Now see an inquiry number on the screen. This is the number you will need to reset it.

• For example, my console displayed this inquiry number: 13441 97925.
• Be sure to write it down somewhere before moving forward.

Step 3: Enter the Master Key

Once you have the Master Key:

1. Go back to Parental Controls on your 3DS.
2. Select “I Forgot” again when it asks for your secret answer.
3. Confirm the inquiry number.
4. When prompted, enter your master key.

You should see a confirmation message: “Master Key Confirmed.” Press OK, then set a new PIN and secret question.

Step 4: Optional – Clear or reformat the system.

If you plan to reformat the 3DS or completely remove parental controls:

• Set a simple, generic PIN like 1111 and a random secret answer.
• Then go to System Settings > Other Settings > Format System Memory.
• Enter your generic PIN, and the console will format it as usual.

If you want to delete Parental Controls without formatting:

System Settings > Parental Controls > Change > Enter PIN > Clear Settings.

The Free Reset Option

• Click Here for Master Key Generator
• IMPORTANT: This is an unofficial, third-party tool. It is NOT affiliated with or endorsed by Nintendo.
• Recommendation: We recommend using Nintendo's official tool (Option 1) for $0.50. It's more reliable, supports Nintendo's services, and ensures you're following official procedures.

Potential Risks:

• • No guarantee of reliability.
  • No official support from Nintendo.
  • Entering device information on an external website.
  • May violate Nintendo's Terms of Service.

• By proceeding, you agree that this is unofficial. Use it at your own risk. You accept full responsibility for any consequences. Also, ensure you use this tool for legitimate purposes on a device you own or have permission to reset.

Here is how to use the free method.

• Step 1: Enter Device Type

  • Select Nintendo 3DS as your device type.

• Step 2: Find Your System Date

  • Open your Nintendo 3DS system settings.
  • Click Other Settings
  • Click the Date & Time button.
  • Press today's date – the console will display the registered date.
  • Enter this date in the form (example: October 23, 2025).

• Step 3: More Data

  • Leave this field blank.

• Step 4: Enter Inquiry Number

  • Enter your inquiry number: 13441 97925
  • Step 5: Generate Master Key
  • Click Go, and your master key will appear at the top of the screen.

Final Thoughts

Before selling or trading in a Nintendo 3DS, note your PIN and secret answer somewhere. In today's world, wiping personal information from a console before it changes hands is a necessity.

Here is a Video Demonstration of This Article:

▶