dinowuff:
Here in the U.S. One can change the cable modems firmware to ignore certain ISP controlled settings. I do not believe it is illegal, as long as you own said modem; however, if you do "Un Cap" your modem - you will soon find your cable service (including T.V.) disabled and you will likely NEVER get service turned back on. And AFAIK, Cable, phone and Satellite companies in the U.S. share this type of data.

Kinda like a ISP "User Black List"
Well I'm sure it is against their TOS and I believe it would be illegal being considered as theft of telecommunication services since you're not officially paying for the service you are getting. In Canada that would fall under article 281.2 or the Criminal Code.

It would be like buying a satellite receiver and paying for minimum service and reprogramming your card for all-access