Modding in NBA 2K12 logos on Xbox 360?

I'm making this big project for the Xbox 360 version of NBA 2K12, but I made teams like the New Orleans Pelicans, Charlotte Hornets, and Brooklyn Nets and the logos 2K has built into the game aren't the best. I was wondering if there was a software or something that could allow me to take the save files for these teams and put in the real logos and possibly some updated jerseys? I know the threads for this game are probably dead but I'm just hoping somebody sees this and can help!

Not as far as I'm aware. We've only ever been able to modify art files on PC, which is the platform we've mostly focused on throughout the years.

Not as far as I'm aware. We've only ever been able to modify art files on PC, which is the platform we've mostly focused on throughout the years.

Do you know how I can find the game's art files?

They're on the disc, which can't be written to or modified. They're not accessible like they are on PC.