Hi,
Thanks for the responses. I may be interested in the remote thing later. I'll have to look at it. I use a Harmony 890, and takes care of most of my problems. Still, I want to be able to communicate with the 990 directly from the PC.

I was able to reassign my Com ports to 1 and 2, and the Outlaw firmware loader seemed OK with that. However, I just get the "Device Restart" message over and over. I tried with both my cables, on Com 1 and Com 2, reset the 990 several times, restarted my PC once.

Has anyone been able to do the firmware upgrade using the Com port as assigned through a USB to Serial cable?

As to the RS 232 codes, they're out there. Search this forum for rs232 protocol and you'll find it. You might need to "OK" the install of Korean fonts for Acrobat, but after that you should be able to view OK. That's what we're using to try to talk with the 990, and no luck...