Yes it's technically possible but complicated as it requires flashing firm0. Once you launch it you can't go back to the 3ds menu without restarting anyway thoughHow do I make it 'pixel-perfect'? Do I need to change something on the config.ini? Is there a way to make a forwarder on my 3DS Home Menu that loads open_agb_firm.firm so I don't need to start my 3DS by pressing 'start'?