The Software update by Internet is not supported.
To upgrade your soundbar's software, follow these steps:
1.Unzip Upgrade file to USB root directory, please don't modify the file name；
2.Soundbar stay in STANDBY mode；
3.press "Next Song → Previous song →BT buttom" to upgrade the software.
4.Upgrade software name like"S642.ufw/S643.ufw/S645.ufw”，select the software name of the corresponding model to upgrade
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