graupner shut down and I can't bind my x-8n radio. even after I had our IT guy update the firmware. gr-8 reciever. used this radio system with telemetry 3 years ago with success. loved it. had my transmitter stolen last year. replaced it with a used one in great shape. now I cant bind the reciever that came with the transmitter or the 1 from the old system. had the IT expert at work update firmware ( beyond my abilities, lol.) still doesn't bind. maybe I'm not doing it right. put power to reciever 3 seconds red and green lightcome on. go to rf set transmitter menu. 1st line rf system hott or hott v2. 2nd line receiver , then press and hold hold down enter button. nothing. receiver will not go to green. anybody???? thanks.