Hi all,
 
	I am new on the forum. I have a pretty old IHC 6.1, which worked well so far. I connected to the controller last time about a year ago.
 
	I am trying to connect now, as I want to extend it a bit, and have the same message as Math reported above. I tried both via LAN and USB, and but always get the same message: Ihc controller not detected but <USB> responds to ping
 
	I am able to change the firmware using the trick provided by Bjarne.
 
	Was on firmware 2.7.200, tried 2.7.148, and then 2.7.199, but still the same message pops-up, and I cannot connect to the controller.
 
	Can someone let me know which firmware I should install? Shall I install 2.8.4 although it is not made for HW 6.1 ? Or shall I move back to an older version?
 
	Thanks for your help in advance