I just purchased one of these to use at work as we appear to be having issues with our current router, or at least I wish to rule it out.
It's a brand new unused John Lewis modem (no branding though), date on the sealed box was September 2017, and it has v10 firmware, prior to updating it I wanted to retrieve the supervisor password (or would it be better to update the firmware then retrieve it?).
Anyway it's been quite a while since I used Putty, I'm entering the default 192.168.1.1 IP address selecting Telnet, so its port 23. When I open the session I get a black box with a cursor, I can type stuff which seems to have no effect, but after a while the connection times out.
Any idea where I'm going wrong? I seemed to have failed at the first hurdle
PS. The zyad1234 supervisor password doesn't work.