Your username is always root, as you're entering the root directory, on your VU+ receivers image. You just need to add a password: By going into the menu, setup, network, and c selecting password, you should have a virtual keyboard, which allows you to enter a password. Otherwise do it from your PC, by downloading PuTTY. Start up PuTTY, enter your receivers IP Address, select the Telnet option, and open. Type in root, and press enter, on your keyboard. On the next line type in passwd, and press enter. Hit enter if your current password is blank, then type in your new password, it doesn't show anything being typed, but it is. Press enter and confirm your new password.