Vizualogic SmartLogic - Manual (Page 47)

SmartLogic Owner’s Manual
47
If you receive this message, open the settings and press the Unknown
Sources and check the empty box.
Press the back button to go back to the Download APK file screen
shown on previous screen.
Next, press the Install button to start the Download. This might take a
few minutes for your Download to complete.
Press the Open button when Download is complete. The Tablet is now
updated.