how to install unauthorized code

[spiderman1234]

I try to install dlc but it says unauthorized code I am using tinfoil and yes i have a nane backup in case everything goes wrong.

How do I enable it in this picture.

 

[masagrator]

Do Konami Code

And I guess + at the end.

 

[draftguy123]

The code is "up, up, down, down, left, right, left, right, b, a, +".