These are the two possible ways to reset your phone. Anything beyond this points needs professional intervention because you will have to access the phone's protected memory to reset the it or recover the security password. While there are solutions on the Internet for this process, their price is very high. For example, you will have to buy a custom hardware box and cables (software included) to access the phone's memory. It should be around 100-500 $. It's way too much and a simple visit to local Nokia Care or phone service shop should be a wiser choice.
