I have an old Strong Receiver SRT 4620 which I acquired recently and it says last update was 2003. I got the loader from Strong web site for update but it will not work. I have a USB-Serial converter as my laptop do not have a serial port. It says "connect your receiver" and turn it on but the software just sits there doing nothing. The name of the loader is SRTLoaderSRTLoaderSRT46404620II4820II and the file I am trying to load ends with a "stb: extension. Can anyone give me some insight other than getting a new box?