Il me semble que c'est cette procédure, ça remet le firmware d'origine. Donc quand on bind, ça refait les mises à jour, etc ...
Hold the bind button while powering up the receiver and the green LED will start to flash rapidly.
Release the bind button and wait for about 1-2 seconds.
Push and hold the bind button again and the green LED will start to flash a double pattern.
When the LED starts to flash rapidly, release the bind button and the firmware repair process will begin.
When the receiver has finished the repair, the LED will start to flash slowly.
The receiver is now ready to be bound and you should power-cycle the receiver to avoid any issues.