Radio code 2004 Micra

Hi there ! just joined the forums, and have been hitting a brick wall, regarding my micra,s radio code , replaced the battery , and it,s been locked since, wondered if anyone could help find it,s code for me , :-), I,m pretty sure it,s a Blaupunkt, and it,s serial number and part numbers are , :- BP334947313013, Part No, :- 8635123392 have had a few suggestions, but after each attempt , it goes to "Wait 1 Hr", It,s a 2004 !.0 E K12 model, many thanks in anticipation :confused: