Utility for updating Printrboard firmware

I have an old Printrbot Smalls printer and I’d like to flash new firmware into its controller board but I can’t find the utility they used to provide for doing that. Can someone point me to software that can flash the Printrboard? I have the hex file that I need to flash but not the utility to do it.


I think that you can use the Arduino IDE or avrdude, because I think it is based on an AVR CPU. (I don’t have one to look at to confirm, though.)