[Q] Change from AT&T version to the european one ? topic

Hi everybody, i have an AT&T HTC One X plus, and i like to change the software to the european one to get the last update and the frensh language because AT&T give only English and Spanish Languages, Can i do this by modifying the PID of the Phone or anything else, else i like to know if there is a hardware difference between the to version AT&T and Europe.
Thank you for your Help.