use mastercode software , you can easily found it over the internet, install it on your fri symbian phone, enter your imei and you will get a master code.
I wont ask your imei coz people will think this is scam..so do it yourself.. !!
@Tamoghno its funny that nokia keeps on developing firmwares that are unhackable..new firmwares can be hacked easily..... !! never under estimate yourself !! trust me !!