DXG Technology DXG-A85V HD - Manual (Page 62)

If you select Delete All, a prompt appears on screen for
confirmation. Move the joystick left and right or tap the screen
to select the desired option. Press the center joystick button to
confirm. All files stored in memory will be deleted.
3. Press the Menu button or tap to exit the menu.
z 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 deletin them.
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