Why Can't I Paste Files Into My iPhone?

So I have a nonjailbroken iPhone 4 that has GBA4iOS. Putting my gb/gbc files were okay, but iTunes or iFunBox is not letting me put gba files into the app. I'm putting them in the Documents folder, but in iTunes, it says that I don't have permission and in iFunBox it does absolutely nothing. One at a time doesn't work, nor does dragging them all. Am I missing something here, or does Apple have a problem?

Well you see, Apple is an evil corporation that has been integrated into society via throwing money at all there problems. Tho they could be using this money to make innovations that actually make there products worth buying, it takes to much thought on their part.
With that being said I did 2 seconds of googling and came up with this
"There's nothing wrong with the permissions of the file you want to put in your iOS device. The problem is tha the iOS device itself is locked. Unlock it so that you can see the home screen and try to move the file using itunes again. Voila!"

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