: Fixing receivers that are stuck on "BOOT" or have a red light after a failed update.
: Connect your PC to the receiver's serial port (often labeled RS232 or available via 3-pin headers on the motherboard). Tool Configuration : Open the GX Downloader Boot Tool . Select the correct COM Port . Choose the Chip Type (e.g., GX6605S). Set the Mode to "Serialdown" and the Section to "All". Flashing : Click "Start." gx downloader boot new
: Ensure your USB-to-Serial adapter drivers are correctly installed in Windows Device Manager. : Fixing receivers that are stuck on "BOOT"
: Double-check the TX/RX/GND pinout; sometimes these must be swapped (TX to RX, RX to TX). RX to TX).