Most STBs use a 9-pin serial cable or a 3.5mm jack-to-RS232 cable.
Once the bar reaches 100%, the tool will usually say "Burn Success" or "Upgrade Complete." The receiver will reboot automatically. Troubleshooting Common Errors
The tool should now show a progress bar indicating "Initializing" followed by "Downloading."
This guide covers everything you need to know about using this specific version to flash firmware and recover your device. What is STB Upgrade Tool Ver 4.0.2?