I'm here with a brand new just assembled unit bought from Sunny with 2.00x F/W installed. I want to update firmware but it fails and fails. The board seems to reboot as soon as avrdude tries to upload the file. There's one reboot (relay click heard) and then a serial reboots as avrdude retries until failing . Tried several cables, all of them working with arduino nano boards so I am out of ideas.
UPDATE: After posting this I tried this in an older Windows 7 running notebook. Latest AVRDUDESS failed but ealier release (the same Manuel uses in the web page) worked (even though it failed in my newer notebook).
Is this going to be so touchy for ever?
Firmware update problem
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