MCU Boot Loader Troubleshooting

When MCU firmware load is interrupted, or the power-on firmware checksum test fails, the K3 enters its bootstrap loader. You can also force the K3 to enter its bootstrap loader by turning the K3 on with a 10-second press and hold of the front panel POWER button. The MCU boot loader displays MCU LD on the K3 front panel display. The display may not be backlit.

To load K3 firmware, follow these steps in sequence: