ahkb1995 Hello!
Thank you for the request.
It is necessary to enable HDMI event reaction and CEC in the STB settings. To do this, change the settings in the embedded portal:
1)Setting\Interface\Stand by mode\change to Active.
2)Setting\Interface\HDMI event reaction change to Disabled
3)Setting\System settings\Advanced settings\HDMI-CEC change to Enabled
Kind regards,
Infomir's team
