Home › Forums › Products › Rackmount › how to get the 4.1 os? › Reply To: how to get the 4.1 os? June 15, 2011 at 11:53 pm #122294 timothyhill While there are a number of Eventide people on this forum, it might be faster to contact support directly. Their email and phone number are listed here… http://www.eventide.com/AudioDivision/Support.aspx