It is possible to add mods to consoles.
What is impossible is to add them legally, and thus it's not allowed to discuss it here.
dno about where you live but I can do whatever I damn well please with a piece of electronics I buy
I can take it apart, swap out parts, change whatever I want
heck I could open it up and wear it on my head if I really wanted to XD
I would probably lose warranty though
and I wouldn't abide by the user terms on xbox live so they could restrict me from going on there
but there's no law saying I can't modify a piece of electronics I bought
I also can't do a lot of these things commercially since I don't own any of the rights
but for personal use I can do whatever I want and no1 could touch me in a court of law
they may have a rule on here stating we're not allowed to talk about it
but there's no legal grounds for going after some1 for modifying THEIR console or game