Telnet and putty are tools you run on a pc to connect to your stb.
(Telnet will need enabling first in windows before you can use it. It's in "Turn Windows Features On/Off".)
There's also a guide here...
http://www.world-of-satellite.com/sh...l=1#post315344
Re-flashing is bar far your best option. Sometimes people have problems, but eventually they find a stick that works.