Little brother has locked Xbox 360 completely using parental controls

You will need to phone Xbox support, to have your situation resolved.

Consult the Xbox support pages, for help to get in contact with Xbox support for your region/country

Hello moej1,

Thank you for posting on the Xbox forums. We need a little more information to ensure we provide the correct solution. Are you attempting to remove the parental lock from an Xbox 360? Are you referring to parental settings that are placed on your account
on the Xbox One? If you are trying to
remove the pass code for parental controls from an Xbox 360, we suggest utilizing the article that we provided. Be sure to let us know the results!

Here are some links to some helpful articles on how to set up the Parental Controls.

Xbox Support - http://support.xbox.com/en-US/xbox-live/parental-controls/parental-control-info

eHow - http://www.ehow.com/how_2335356_set-parental-locks-xbox-360.html

Hi there!

You can use the
Xbox 360 console control reset page if you have forgotten a code or need to clear a purchased console's parental lock!

Thank you for contact us! I'm Anderson, an Independent Consultant and a Microsoft user like you.

good evening

Hi Roger from Wolverhampton,

I'm sorry to hear that you're having trouble removing the parental lock from your Xbox 360. Here are a few steps you can try to remove the parental lock:

Try the default parental lock passcode: The default passcode for Xbox 360 parental lock is "0000" or "1234". Try entering these codes to see if it unlocks the parental control.

Reset your Xbox 360 to factory settings: This will erase all data on your console, including the parental control settings. To do this, go to "System Settings" > "Storage" > "All Devices" > "System Items" > "Hard Drive" > "Reset System Settings".

Remove the parental lock through your Microsoft account: Go to your Microsoft account on a web browser, select "Devices" > "Xbox Consoles" > "Manage" > "Remove Console" to remove the parental lock from your Xbox 360.