These are some of the main shortcuts that I need when I configure my retropie. So I decided that I will have them all here.
Press ‘F4’ from an external keyboard to exit the emulationstation. Alternatively manually exit the emulationstation and type the following in the terminal.
rm /home/pi/.emulationstation/es_input.cfg
After deleting this file the system needs to be restarted. Enter the follow command.
sudo reboot