Hi, I have the above same problem-Da Vinci 2 Duo-upgraded FW to Repetier 0.92 - greyed out EEPROM in host.
Host keeps reporting that 'COM(port) does not exist' - I have tried settings from 1-11, host (seems to) connect (the connect button goes GREEN) but when i disconnect it throws an error saying the port does not exist.
How (please) do I action M115 to check the firmware string?
Regards