tgz) for development purposes, or are you trying to decide if this modem is the right fit for your ? Customer reviews of the NETGEAR CM2000 Nighthawk

: Unlike routers, cable modem firmware is typically managed and pushed by your ISP , not the user.

: Features a single 2.5G Ethernet port , which is essential for reaching speeds beyond 1Gbps.

: Some users on Xfinity have noted that the CM2000 is not certified for their newer "Next Gen" (Mid-Split) upload speed upgrades; for those specific speeds, users often recommend the newer NETGEAR CM3000 .