When going to add widget, then photo frame to put a picture on my background, there are 2 options to go to either my gallery or an app I have called backgrounds. There was an option box below the 2 options that said make default setting. I checked the box so that I would not have to keep clicking on gallery, so that it would go there automatically. After checking the box, I accidently clicked the backgrounds option instead of gallery. So now every time I try to put a picture on my background, I am automatically taken to backgrounds app instead of my gallery. How do i undo this?