Bigger JCV = higher res & more views. I can use any of those jcv files in my modded 1300. Not sure if that is the case with this iphone app, but probably can use any. If you're not game to try, maybe PM neadrenalin or catymag if they or someone else doesn't post to clarify following this. Later map & JCV available: [Only registered and activated users can see links. ]