avrdude -c usbasp -p m328p -U flash:w:firmware.hex -U eeprom:w:firmware.eep -U lfuse:w:0xF7:m -U hfuse:w:0xD9:m -U efuse:w:0xFC:m
Incorrect fuses will brick the display or mess up the clock speed. For standard k-firmware on an 8MHz external crystal, standard fuses are usually: Low: 0xFF High: 0xD9 Extended: 0xFC (Verify with the firmware readme file).