Hello. Have a Pro 106. Haven't used it in a while. I programmed it shortly after I purchased it (late 2012). Used the ARC 500 & cable that was purchased from Radion Shack. A few days ago I got it out and tried to update it. I purchased a subscription to this site as well as the ARC 500. I can't get it to work. Any suggestions and/or tips are welcome. Thanks!