[Help] My Becker BE2140 Radio is locked

Can some one helps me?

My Becker BE2140

Type: Grand Prix

S/N: S5002127



I need 4 digits code.



Already try the Becker serial B4

I typed 2127 and it turns out "4220" But the code is not working...



plz somebody helps me :(

Big thanks in advance

via Welcome to gsm-tips http://ift.tt/1xLZZng