Marco, I bought a Node in August '21. I don't recall updating the software. I've used the USB to feed an Ares II with no problems. I'm running v.3.18.7 which is current afaik.
Bluesound Node 2 vs. Node (2021)
I am currently enjoying an older Node 2 and wondering if I my sound quality might benefit from an upgrade to the new, 3rd generation, Node (2021). My system: Network > Node 2 (via Cat5e) > Chord Qutest DAC (via Coaxial) > Hegel H190 (via analog) > Magnepan 1.7i. I'm only using the Node's WiFi for control via the Blue OS app on a tablet.
Thoughts?