Maybe can help you!

Reset to factory settings
Nokia N96 Hard Reset, Nokia N96 Master Reset Nokia N96 reset
To perform a master reset or hard reset on your Nokia N96 you will need to:
dial *#7780# or *#7370#
enter your security code (default is 12345)

Free unlocking Gsm : Nokia N96 disassembly ( video )
Want to change how your Nokia N96 looks? Want To Disassemble your Nokia N96 .Here are video and instructions which show you how you can do it yourself. I purposely omit the instructions that will enable you disassemble the phone

Download :

video