Thank you so much. So the r8x is in place but impossible to bind. I flashed the receiver with the Smartport on the remote control (because the new receiver was in the EU and my radio control in FCC) but I still have the red and green LEDs that stay on. I think I did something wrong. I also looked at lots of tutorials and forums and tried lots of manipulations but nothing works. Do you have an idea of the procedure? cordially