Martin, do you know your printer is not in compatibility list? http://www.tp-link.com/common/compatible/print-server/

V4 can ONLY upgrade firmwares for V4 and it CANNOT upgrade firmwares for V5.

How did you test remotely to access management page? http://www.tp-link.com/en/article/?faqid=308

Your understanding is right. W8961NB cannot be a VPN client or server.

Unfortunately, I don't think so...Buy a new one then...

Cliff, did you change Wi-Fi name of WR740N? Can you detect it and connect to it successfully? Any IP address obtained wirelessly? What's the IP address obtained by wire? Did you try to use it as...