[Q] De-Brand Lumia 920 Orange France topic

Hi, I will receive a Lumia 920 'Orange Brand' from France.
I'd like to know if there is any way to de-brand it.
My goal is flash it using an Italian operator-free ROM.

What is the best/newest rom (Firmware Black I suppose) to use?
Are there any potential problem flashing lumia using different country rom?

Regards
Fabio