oFirmware Upgrade1Select “Advanced”.2Select “FIRMWARE UPGRADE” tab.3Manually check for a firmware upgrade.oAboutViewing technical details about the HEOS device.1Select “Advanced”.2Select “ABOUT” tab.3Scroll down to see information about the speaker’sa. Hardwareb. Softwarec. DeviceContentsSetupUseTroubleshootingStatus LEDAppendix40