I have the same problem as Joe Dempsey inserting any flash drive starts loading the data and seconds later the command lights (play; stop; etc) go off and on successively.
If i connect Utrack 24 to my pc, it is not recognized either!
Already reinstalled all available firmwere (Through RJ45 port, USB does not work) installs everything normally, but in the end the same thing happens! Urgent! Who helps me?