need 6006E radio code ?

Hello, I have changed the battery of my car and now the radio ask me for a code. I have looked in the documentation of the car and I have not find it.

The model of the radio is 6006E and the serial number is M030099

I have used a program that I got from internet, but it seems that for the series numbers M doesn't work. I have already put once the code that gives me the program (6395) and it is not correct.

Please I need help