Go to ZiiPOS and tab the button in the lower left corner on the homepage of ZiiPOS.
Go to “Settings”.
Click the button on the left and go to “Media”.
Click “New”.
Choose a picture and open it.
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.
This is how to upload a wallpaper to Kiosk