Regarding dvd player philips 615

I tried to hack it the way it was written on this website, that is: by pressing 1111 (number 1 on the remote control four times) and then pressing a number which correspond to a region code, 0 (zero) for instance. But it doesn't work. When I reach number 1 for the forth time the drive opens (or closes if it is opened) and if I continued by pressing 0 it appears "select 00". Is this happening to anyone else? How can I fix this?
I also tried pressing 12 times number 1 and then 0, the drive still opens (or closes) and doesn't work.