Reply To: marlin software wont upload

#17785
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vicious1
Keymaster

The fatal error is usually caused by not attaching the resistor to terminal T0.

If you bought it from me you do not need to reflash the arduino, it is no the issue.
Your arduino error is from using the wrong firmware arduino version combo. TRy the beta firmware, the most recent arduino .11, and make sure you have the ug8lib installed. there is a walkthrough on the firmware page.