Resdtore factory settings for 5130 xpress music india mobile.i want to format my mobile

Hi,
the default security code for 5130c is 12345 or 00000 ...but if you changed it and now you forget your phone cannot be restore to factory setting..i hope it will not change,but in case the default not works ,visit your nearest nokia care center or a mobile phone technician who have cyclone gadget or mx key dongle to restore your phone without losing your contacts and all of the data in your mobile phone...i hope it will help you