[askholme]

So i did enable verbose output and there was no error messages or similiar.

But i might have discovered the reason – it looks like there is a soldering issue on my FTDI breakout board which potentially means that the DTR and CTS pins have bad or no connection.

As far as i understand various post the DTR pin is used to send a reset signal before starting the programming. I guess a missing reset could be the underlying reason. For the first upload the board would be empty and not require the reset signal but afterwards the upload is effectively discarded because of the missing reset.

I will try to fix the soldering and see if that helps

//Ask

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