How to upgrade Digital Sign Client app on the Desk Booking Screen WS-0350

Get the .APK file from maintenance.add-on.com
Copy the APK file to a USB pen
Plugin the USB pen into the Micro USB port (an adapter must be necessary)
Exit the Digital Sign Client app
From the (firmware) menu interface select Open File app
Select USB drive
Tab on the APK file and the installation will start
After finishing the upgrade then restart the device

Choose files or drag and drop files

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