I own a Netgear C6300BD, it works fine, at least for downloading speed.
However while videoconferencing people tell me they hear me stutter (my voice drops every few seconds), regardless of videconf app (zoom, teams, whatsapp, etc.), or device.
The current firmware is 2.01.08.
On the manufacturer's page says the latest firmware version for Comcast is 3.01.12
However I haven't been able to update it.
Just to be clear, I can connect fine, and I have good downstream speed, the main issue seems to be upstream stability, which is frustrating while videocalling.
I want to know:
On the xfinity devices page, the modem shows up as "Cable Modem NETGEAR NOMODEL", so I guess that's the main issue, Comcast can't push the update because they can't know the modem's series?