Reset master key for a 3ds - Nintendo 3ds Handheld Game Console- Cosmo Black for DS

If you forget your PIN, it's possible to reset it by following these steps:

1. Open the System Settings software from the HOME Menu.
2. Select Parental Controls and tap "Forgot PIN".
3. You will be prompted to enter the answer to your secret question. Once entered, you will gain access to the Parental Controls front page. You can reset your PIN here by tapping "Change PIN" and following the on-screen instructions.

If you have also forgotten the answer to your secret question, you can have a master key sent to your registered email address by following these steps:

1. Open the System Settings software from the HOME Menu.
2. Select Parental Controls and tap "Forgot PIN".
3. When prompted to enter the answer to your secret question, tap "I Forgot". If the partial email address displayed on screen is correct, tap "OK". The system will connect to the internet and display further information. Shortly an email containing a master key will be sent to your registered email address. The master key is valid for 48 hours.

It may be best to refer to your console's documentation, or contact the manufacturer directly. Depending on their procedures, they may be able to email a password reset to you, or you may need to do a reset. With some products, nothing can be done if you don't remember the master key password, so check your documentation or contact the company to find out your options.

You can also remove the Parental Lock Code online on the Nintendo Website you just have to pay $0.50 and need the Serial Number which is in the bottom of the 3DS and the Confirmation Number and you will get an email with the Master Key took me some time to figure it out and it was easy. Option 7 thats in the bottom.
http://en-americas-support.nintendo.com/app/answers/detail/a_id/2982

There probably won't be anyone available on here to answer your question, without more info. You are asking for a master key? for what? You mention an inquiry number, but don't let us know what it is for.

It is difficult for ppl to answer even with an inquiry number. Even more difficult to have, or know of a master key for a 3DS.

You can call Nintendo at 1-800-255-3700 for help. He,or She will give you a master key to clear the parental controls, and reset you password.
Note. A master key is a 5 digit code Nintendo assigns your system. This code can only be used for 24 Hrs. Hope this helps.

Find the Nintendo phone number ad give them a ring then on you DS DSi 3DS DSi exel or 3DS exel go to parental controls and say i forgot twice and the person on the phone will give you a master key the hacks dont work unless you have a wii

http://www.nintendo.com/consumer/systems/dsi/en_na/settingsParentalControls.jsp#Topic03

Call Customer Service, the number is in the 3ds manual.

23015288