Hi guys.
Thank you very much for your help. Finally, I could configure the 8bitdo m30 bluetooth gamepad for Retropie 4.6 but I have a problem. I need to configure the gamepad everytime I turn on the Raspberry Pi 4 model b with 2 GB because I can't pair the gamepad with Retropie when I turn on the Pi.
I test several buttoms configurations: "Start" 2 seconds + "Select" 3 seconds, "Start" 2 seconds + "Pair" 3 seconds,... but it didn't function at all. There is any special buttom combination that I should press to pair my gamepad with Retropie when I turn on the Pi?
Kind regards.