I needed to say that you can NOT use Advanced Mode script for enable telnet with UNSUPPORTED firmware because, exeDSP kills telnetd after start...
Also you needed to have patched firmware for using Advanced Mode script and SamyGO.sh script is not created for running from root of USB, I don't know how you invented this approach
![Smile :)](./images/smilies/icon_e_smile.gif)
You needed to revert your firmware back, for that you needed to enable telnet at your device and it seems not responding. (You upgraded to latest version right? If you don't you have out of luck. )
I don't know why and couldn't identify problem because I am not CI+ owner nor updated the latest firmware.