Ensure you are using the file for the PLUS model and not the older "New" or "Old" versions of the 2500 HD.

Do not turn off the power while the progress bar is moving.

Place the .bin file in the root directory of the USB (not inside any folders). Clean Installation: Plug the USB into the receiver. Navigate to Menu > Expansion > USB .

Official Geant Software Download Page or the FBENSAT Support Archive. 🛠️ How to Install the FBENSAT Retour File

This means your current software is too new to be rolled back via USB. You may need to use a RS232 Loader tool and a PC to force the flash.

Once the receiver reboots, go to Installation > Factory Default > All to clear old cache data and ensure the "Retour" is fully integrated. ⚠️ Why use the FBENSAT "Retour" file?