OK something is happening but nothing like I would have expected. First let me say I built a straight thru cable with pin 1 to pin 1 etc all til pin 8. I then plugged this into my RS232 port tester breakout board. I closed all switches between the pins and used jumpers to duplicate the diagram given by predator. No transfer would occur til both port settings were set to hardware. I changed the port settings (hardware/software flow control) on each port individually and in unison with no luck on the download aspect. Uploads were still possible in this configuration. So since I didnt believe 6, 8 & 20 should be jumpered, I pulled the jumpers out. Uploads were still possible. Like always if a few jumpers had been removed, what about if I pulled them all off? I did. I was not able to upload at some point (not sure when just yet). BUT I tried a download of the same file I had been trying all along (13 lines) and it went thru! Now this is only with pins 1,2 & 3 opened and no jumpers. Pin set up is 1-1, 2-2 etc (is this called a null wiring?) I repeated it many times to make sure it was actually happening. Sure enough I can now download without any problem! I have not tried a file of any size as I am sure buffers and other issues I dont understand will follow. But to do both at the same time is a mystery as of yet. But it is so close. Does this sound crazy or what? Tips from here?