Go to ZiiPOS and tab the button in the lower left corner on the homepage of ZiiPOS.
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Go to “Settings”.
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Click the button on the left and go to “Media”.
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Click “New”.
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Choose a picture and open it.
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The proper size should be 9:16, if the size is not 9:16, you can drag it to set up the displaying area. Click “Save” to save the change.
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This is how to upload a wallpaper to Kiosk