Russound now "locks" their products. They only way to unlock them is to be an authorized Russound dealer. When an end user buys a Russound unit online and calls Russound to unlock it Russound simply tells the end user to go back to their dealer and have it unlocked, knowing that the dealer isn't authorized can't unlock it. If the end user can't get it done Russound recommends that they return it and buy from a local authorized dealer.