Your TV is attempting to identify the connected device. Because many generic Android boxes use "Mbox Meson Ref" as their default product description in the firmware, the TV simply displays that internal label.
Manufacturers sometimes release updates that change this generic label to the actual brand name of the device. mbox meson ref
Some TV boxes allow you to rename the device in the HDMI-CEC or Display settings menu. Your TV is attempting to identify the connected device
Users running custom software like CoreELEC can change this value by modifying the device tree (dtb.img) using specific commands (e.g., fdtput ) to override the product_desc field. Some TV boxes allow you to rename the
In some cases, poor-quality HDMI cables can cause the TV to "lose" and "refind" the box repeatedly, causing the label to pop up constantly. Replacing the cable can stabilize the connection. Summary Table Mbox Generic term for a digital media/streaming box. Meson The processor architecture family from Amlogic. Ref Default hardware reference used in the device firmware. Change the HDMI "label" - CoreELEC Forums