My little brother reset my blackberry HELP ME PLZ I NEED MY PHONE

From Pinstack.com---> If you do get locked out, to reset your password would require a low level reset, or "nuke", which is a fairly drastic procedure. A low level reset wipes out your BlackBerry's memory completely, including the operating system. To make it functional again, you would have to cradle the device and reinstall all the BlackBerry software.