A quick version of avrdude method for Windows users - tinyG firmware download
AVR Programming–Tutorial 4–AVRDUDE command line Programming | alselectro
avrdude/NEWS at main · avrdudes/avrdude · GitHub
avrdude: can't open config file "/Users/jenkins/jenkins/workspace/toolchain-avr-mac32/objdir/etc/avrdude. conf": No such file or directory · Issue #4379 · arduino/Arduino · GitHub