If you select Delete All, press the scroll wheel inwards to display the submenu.
3.Use the scroll wheel to select √ and then press the scroll wheel inwards to delete.
4.Press the MENU button again to exit the menu.
Note: Once deleted, files cannot be recovered so make sure you have a backup before you delete. Files that have been protected will not be deleted. You have to unlock the files first before deleting them.
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