: If files are missing from the online portal, you can reach out directly to customer service on the Harman Kardon Support Portal.
To update the firmware on your , you can use either a USB drive or an online update through the system menu . Because specific download links for the
The update takes between 8 and 20 minutes. The screen may go black, the display may flash “LOADER,” and the fans may spin up to maximum speed. All of this is normal.
Harman Kardon recommends a factory reset after every firmware update to clear the cache and ensure new settings take effect: Go to > System > Restore Defaults and select OK .
Once the update is complete, the system will return to the home screen or standby mode. Go back to System Information to verify that the version number has updated.