At least in the US, I don't believe there is any precedent that establishes it is illegal to alter a product. There is always push back by companies, but it se

At least in the US, I don't believe there is any precedent that establishes it is illegal to alter a product. There is always push back by companies, but it seems that the general trend is always in favor of the consumer (see, rooting your phone is found legal, this video concerning the legality of modifying cars and tractors https://www.youtube.com/watch?v=Nps24EqiZjY https://www.youtube.com/watch?v=Nps24EqiZjY )