You need to keep pressing the PRO button to upgrade the firmware, and then press the RST button. Wait for DO2 to flash, you can proceed to the next step
You need to press the PRO button continuously and then press the RST button to upgrade the firmware. Wait for DO2 to flash and you'll go on to the next step
You need to press the pro button continuously and then press the rst button to upgrade the firmware. Wait for DO2 to flash before you go to the next step<br>