Shenzhen Jie Xin Chuang Zhan Science and Technology Co. Ltd RHYTHMI Manuel D’Utilisation

Then click the “System” table
Notice: You can check the firmware version on this page.

4. In the System table, choose the firmware file, then click the “Apply” button, as shown below

5. Wait until the firmware update is complete
6. Repeat the above steps to update other firmware