Radio Cd on 7 SAFE mode?

Hello guys
I have a Suzuki Ignis and i have put back the blaupunkt radio cd that the car had when it was new. I have started putting the code from the number 10 countdown and everything was going ok until it has reach number 7 and then it has stuck just saying 7 SAFE on it and i cannot continue or go back to the begenning and start over again. Can you please help?
many thanks
Nasos