nokia 5130 forgot security code

I forgot my security code nokia 5130? i tried to unlock my phone with the master code. but its not working now with my original security code also which i remember now.

Answer:

Security code and service provider r both differnet things. flash your phone from any nokia services center and your code shall come to the default 12345.

If its not the security code, and is the network unlock code that you want, then you will have to get your set unlocked either from internet or from some local Nokia service center. Or from your service provider.