Fix Nintendo 3DS not playing DS games

Fix Nintendo 3DS not playing DS games

Go to DS WiFi settings (system settings > WiFi > DS)

After performing a firmware update, I was not able to play DS games. I found going into the DS menu settings that I was then able to play DS games. 

The game that I wanted to play badly was Television Lives, specifically B-52 bomber. I think this game might even be better playing on the 3DS with the below screen that aids in navigation versus the original Intellivision controllers that required pressing the number buttons. 

My only request is that the screen does not utilize the full screen.