As I understand it, the 861v4 is and end of line product. So can't be upgraded to a v6 (and the just announced v8).
You need to check you have the latest firmware for your individual products.

Meridian did to a trade in for v4 to v6 and you got to keep the old v4 although it can't be traded again. That may be over now.

There is plenty of information on Duncan's site, link on top of page.

Thoughts, Chris smile

Last edited by ChrisLayerUK; 2012-12-17 13:59.
No 18 in the Hall of fame smile I have simple tastes; I am content to settle for the best:
GIK monster bass panels, rear wall. QNAP TVS 471i3. Roon into DSP5200SE via 210/ 218 zone... Explorer 2. Bluesound Pulse 2, Mini & Flex. 596v1, 518, Foxsat HD, Sony BDP, Pioneer 5090, 2 Chromecast's for LRB videos. MS200 to F80 for a Roon zone