Doubt you will ever see the unit for sale again. Support (firmware) ended a long, long time again.
I was one of the folks that purchased the unit at the very beginning. While it was a pretty good unit at first, the firmware never really got up to speed. It was a shame as the unit had a lot of potential, just never got the firmware there.
When support ended, I searched for a replacement and came up with the ZIDOO. While all of these media streamers have their peculiarities, I have been quite satisfied with this one. Support, while limited to their forums, is quite good.
Hopefully they will not remove this post. In the past the mere mention of competing products resulted in removal. But since they no longer sell the DMS I thought I would try it.