After uploading firmware through dfu-programmer to finally find my board under ports (I haven't been able to do this ever) I tried to upload blink sketch to test it but it gave me the stk500_getsync() error messages.
-only have thunderbolt (usb-c) ports
-have used a couple different cords and adapters
currently showing in ports as /dev/cu.usbmodem14401
Also pin 13 LED is always on
Tried to burn bootloader but it said error while burning bootloader