Please don't take offense, but using the search option with keywords like "tetherberry" would have found about a hundred other threads discussing this and other "tether" questions, this has been asked numerous times and the answers are here, that is why if you noticed when starting a new thread, after you put in the title of the new thread and then select the message field it will give you a selection of other threads with keywords from your title, they have done this for a reason and that is to "SEARCH" before posting a duplicate thread, believe me when I tell you this has been covered numerous times.