Robert L Cochran wrote: > I can report a happy ending to the story now. AVRStudio4 did a firmware > upgrade to the programmer itself. When I retried avrdude using > /dev/ttyUSB0, it worked like magic. Here is the output: > I am glad to hear you have it working. It is too bad that there isn't Linux software to do the firmware upgrade. I suspect that the upgrade was necessary for the programmer to talk to the device you were trying to program. There error messages from arvdude made it look as if avrdude could not talk to the programmer, and not that the programmer could not talk to the device. At least the next person to run into same problem may be able to find this thread and know how to fix it... Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!