How do I update the DRC AC firmware? 09 January 2024 10:12 Updated See point 4. DRC AC FIRMWARE UPDATE of the DRC AC manual. Related articles DRC AC I updated the firmware of the DRC AC and all the LEDs remain ligth green, but I can no longer get it to work? B-CON go app manual 2. PACKAGING CONTENTS I installed the bit Drive software, but it does not detect the amplifier connected via USB?