How do i reset lock code on W350i?

Hi, I have a w350i and i do not know master code to reset it. Phone is buy from somebody and I have no ideea who it is and how to get the master code.

Any help will be apreciated, I know to work with far, xs and athors se free tools.

P.S. Not puk code.

try 0000, if it doesn't work you need to reset the code with Omnius which is a paid service