Yeah, maybe, but I don't see any conflicts in the device manager. Is there an easy way to list all devices on an IRQ? I know COM3 would normally share IRQ4, but don't have that setup.

Keep in mind that the upgrader successfully completes many steps before stalling on this one, so I suspect there is more to it than IRQ conflict (otherwise, wouldn't everything fail?)

Didn't try hyperterminal, got a more severe problem at the moment - the display doesn't not come up at all - totally blank. I have a note to carsupport, but suspect it's a defective unit. :-(