I'm caught in a vicious cycle.  TP-Link says the firmware upgrade has to come through the IP because they control the coax cable.  IP says it doesn't matter who controls it.  They refuse to upgrade it.  They gave specific instructions on where to download from the TP-Link site.  The destinations in their instructions do not exist.  I've been back and forth multiple times.  One IP rep tells me they've abolished Level 2 support.  The next says they do have Level 2 support.  My current upload speed is 0.00-0.50.  Today TP-Link says there are no firmware upgrades for modems.  He says the firmware info [related to current version] I was given by 2 previous reps is for V2 hardware.  I have V1.  Any suggestions?  Does anybody know the truth and how to reach someone who can help?