jersey without logos

Hi guys, i want to ask, what if i delete nba logo from jersey and shorts using gimp (erase tool) and saved that, but now i want to go back, how can i do that?

revert back to original files, or add the NBA logo back to the uniforms

revert back to original files, or add the NBA logo back to the uniforms

how to add the NBA logo back? i already saved that textures without logos, and can't undo

then SOL