How to remove BB 8520 password?

Try This : 
1.Enter any password incorrect ten times and the bb will wipe its self and the password will be gone.
2.enter any password 10 times,then it vl wipe automatic, aftr rebooting mayb some handsets asking ti type new code,,so give a new security code contail letters and number
eg:1234abcd
3.use di command for removed pass or reset ITpolicy

Quote:

:start "C:\Program Files\Common Files\Research In Motion\AppLoader\Loader.exe" /resettofactory @echo off

save with ext .bat or cmd