If wiring and config are correct, but error persists:
When the tool shows "Wait ROM request," immediately toggle the power switch on the back of the box. : Bootrom Error Wait For Get Please Check Stb Uart Receive
Ensure you are using a high-quality, short USB Male-to-Male cable. If wiring and config are correct, but error
The Bootrom requires clean, stable power to drive the UART at high baud rates. A failing power supply capacitor or an underpowered USB cable can cause the UART receiver logic to miss the start bit, leading to the "no receive" condition. If wiring and config are correct