Free codes does not work some times..So better you will get the code from your network provider or you may get it from online providers like http://www.unlocking4u.com/ .They will help you to unlock your mobile easily.
vamsi
May 2012
let me know if you find one
wally29567
April 2009
I can answer this question...
how can i get a free unlock code for a sony ericsson w610i?