: The device is not in the correct "Boot Mode" at the exact moment the software sends the request. Many devices require a specific power-on sequence or a physical button press (like BOOT0) to enter the bootloader.
The software will display "Wait ROM request..." or "Waiting for GET".
You will see debug logs. Look for a prompt to stop autoboot (e.g., Press any key to stop autoboot ). : The device is not in the correct
Here's a step-by-step guide to help you investigate and potentially fix the boot ROM error:
Use a pair of metallic tweezers to short the CLK pin to a Ground (GND) pad. You will see debug logs
: Verify the port number in Windows Device Manager and match it in the tool.
The error means the communication between your PC and the TV box was interrupted or corrupted during the flashing process. : Verify the port number in Windows Device
If after all steps the error persists and UART shows no activity at all, possible hardware failures:
The causes of this specific bootrom error can vary, but common culprits include:
: Swapping the TX and RX pins. The TX (Transmit) of your adapter must connect to the RX (Receive) of the STB, and vice versa.