well, i put the folder in the root of USB device, but dont have any popup as you said.
And when i try to reboot the box, myiptvonline is still installed but I don't see the "classic" logo, it's IPTV logo and my older portal is still configured, can't change. I think the older supplier did something to prevent me to add a new portal other than his ...
Well it works !! i just had the pop up, and now i can access to portal end edit them ! THANK YOU