You can flash the box with 6.2 and then do the Installation option 2 setup described in post 1 of this thread but for option 1 it shouldn't matter as the setup script with fetch and flash atv 6.2 for you.Hi grog, yep, telnet running. Do I need to bee on atv 6.2?
out of interest are you using the box hostname to access openwebif or the box IP address? if the hostname then try using the IP address and see if the terminal connects then. If not you could try downloading putty from https://www.putty.org/ and see if that connects to your box.