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I have figured out something.. U go normally to media folder then press on the menu button then press explore will get u a page with media card or device memory so you choose one of them and locate your hidden file where was it. if it was a picture it will be found in the pictures folder and so on so you go to the pictures folder, press the menu button then you will get show hidden items or some sort of option so the hidden item appears and you go to its properties and un mark the hidden checkbox.. Done easier than being written