This is the third time. You ask and for the Third time I reply
IT CANNOT BE DONE FOR FREE BY ANYONE
These unlocking Service provider will need paying
to do this. as ONLY they can give you the coide.It will cost around 20 of your Americasn Dollars if you are in USA
This is partly to stop people unblocking phiones which are stolen.
There are lots of sites that will offer the Service..
An example I came across is here,.