Hi Mauro ,
AFAIK you can do one of the following:
Use a different printer.
Makes no sense to mention this, but still ...
Keep on searching for a compatible driver that is on the COS box.
This can be time consuming, but it takes no brain power.
Find the right driver and install it.
For this you would have to get to know the Linux CLI.
Compile the driver yourself.
IMHO you would need to be an expert developer for this.
I hope this points you in the right direction.