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In Tonido iOS v4.0.1 onwards, the iPhone version will allow jumping to the base folder by tapping the "Files" option on the bottom bar.
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In iPad, you can tap the refresh icon on the bottom of the screen to refresh a view.
In iPhone/iPod, you need Tonido iOS v4.0.1 app to do this function. You can "swipe" down to cause the view to refresh.