*#92702689# code not working in my nokia 7210 supernova.?

is there any problem with my device??are there any alternative codes to display the purchase date?


can i reset the security code that my son put in it accidentally?
now i cant lock my phone..

help will be appretiated

(i tried NSS.but whenever i scan the phone,it says error)

Hi. You can do a master reset to your Nokia 7210. This would restore your phone with default factory settings. You can get the free master reset code for a Nokia 7210 from unlocking4free.com Good luck.