1. The firmware update via the APP will take approximately 5–10 minutes. During the update process, do not disconnect power, exit the APP, or switch the APP to the background. Please keep the APP in the foreground and wait patiently for the update to complete.
2. During the update, place the subwoofer and surround speakers within 5 meters of the main soundbar to prevent update failure. Refrain from operating the device (e.g., playing music or media content) while the update is in progress.
3. In the event of an unexpected power outage or APP exit, power off the main soundbar, subwoofer, and surround speakers completely for 1–3 minutes. Then, restart the devices, force quit the APP, and retry the update.
4. After the update is completed, the product will restart automatically. If the device does not reconnect to the APP after restarting, delete the device from the APP, power off all units completely for 3–5 minutes, power them back on, and then re-pair and reconnect the device.
5. If the issue persists, please check the firmware version and contact customer support with the version information for further assistance.
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