Thanks guys. Just remember now that I found myself wondering if the code_reset input I had to told it on the command prompt of the laptop or in the N900 using its keyboard. I decided to try the N900 keyboard and hope code..... And then where 8s this key_? The lower line? _
Well found that if you press the top.left key (car ctrl) and the key with number 8 prompts the whole code_reset thing

In case anybody needs it 1 day.

Again thanks again to all of you who didn't give up and for us patience. It was important for me to bring back the phone to live. I'm not going to use it but at least it does work. It is crazy what a simple and stupid idea like locking then phone can turn into. So messy