I too have the MI424WR router and want to upgrade to a personally owned router so I need the COAX input changed to Ethernet. I did talk to Verizon via chat session and they tried to run a command to make the switch, but it did not work.
Are there some terminal boxes, even though they have an Ethernet port inside them, the Ethernet port cannot be made to work? If this is the case then customers are restricted to use only Verizon routers and they are not the most efficient on the market.
regards,
cdukeDOTF