Avrdude 6.3 Download [patched] -

If you run avrdude and get an error saying "cannot find configuration file," ensure avrdude.conf is in the same folder as avrdude.exe , or specify its location manually with the -C flag: avrdude -C C:\avrdude\bin\avrdude.conf ...

Most distributions never packaged 6.3 separately. You can: avrdude 6.3 download

Expected output: avrdude version 6.3

The official source code for version 6.3 is hosted on (GNU project): If you run avrdude and get an error