Hmmm .. your last post in the XX12 Owner's thread was 3 months ago, in which you were given the advice to do a microprocessor reset. Did you? What about resetting your router? As you never posted back with the results of whether the reset worked or not, there was nothing further to communicate with you.
Otherwise, check Denon's website for any authorized repair facilities in your local area that can do the update for you.
http://usa.denon.com/us/support/pages/servicecentersearch.aspx

Otherwise, check Denon's website for any authorized repair facilities in your local area that can do the update for you.
http://usa.denon.com/us/support/pages/servicecentersearch.aspx