Once complete, a pop-up window will read or "Upgrade OK."

Once the application presents a "Complete" or "Success" dialogue box, close the loader, power down the receiver, and disconnect the serial wires.

Select the COM port corresponding to your cable (e.g., COM1, COM3). Mode: Set to "SerialDown". Select Files: Boot File: Choose the gx6605s-generic-sflash.boot file.

: It allows for direct writing to the device's flash memory, bypassing the standard USB update method which often fails if the receiver's software is corrupted.

This article covers what the loader does, why the "new boot" version matters, and how to download and use it safely. What is GX6605S Loader V1.031?

– Run the executable as administrator (right‑click → “Run as administrator”).

This specific release differentiates itself from older iterations (such as v1.027 or v1.029) with several under-the-hood improvements: