Flashing the wrong version is the most common cause of device failure.
Always back up your current settings before flashing. These files are hardware-specific; using a bin for a different board version (like HW203 vs. HW102) can lead to a "bricked" receiver that requires a serial loader to fix. Find the right firmware for your GX6605 device What is your primary goal for this download?
: If your box is stuck on a "boot" loop or a "red light," a clean recovery.bin (often renamed from the original firmware) can be flashed via USB or an RS232 tool to bring it back to life.