In rare instances, the soundbar will be stuck in in UPG when upgrading firmware.

 

If the soundbar displays UPG-- more than 30 seconds,

• Unplug the USB from the back of the soundbar.

• The soundbar will display FAIL and reboot.

• Reinsert the USB drive, switch the soundbar to USB mode and perform the upgrade again.

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If the soundbar is stuck in UPG-- even after rebooting, it means that the USB drive is not compatible.  

• Power off the soundbar by unplugging the power cord.

• Insert a compatible drive with the correct firmware, power on the soundbar and the upgrade should start automatically.
   

If you need a USB drive with preloaded firmware, please contact support@nakamichi-usa.com

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For other information, visit the firmware pages for the following models: