Adafruit usbtiny driver download
After downloading a zip (from here) and extracting, the driver installer which can be found here: rushbrookrathbone.co.uk I used adafruit's driver installer (rushbrookrathbone.co.uk) it did install my device but when I type avrdude -c usbtiny -p m32 it says this. Check rushbrookrathbone.co.uk#for-linux (rushbrookrathbone.co.uk) for what to Download Signed Adafruit Trinket/Gemma Driver.