Do you have the of your set-top box so I can look for the specific factory firmware or recovery tool?
This error is common among Android TV boxes (such as those from brands like Mecool, Rockchip, or Amlogic) and usually triggers when the device's hardware security—specifically the process—detects a handshake failure during startup. Do you have the of your set-top box
: The error originates from the first code executed by the processor (the Boot ROM), which is hard-coded into the silicon and cannot be changed. Wait for Get / Check STB UART Receive Do you have the of your set-top box