@davisri Well, I just heard back from ViewSonic support. It is not possible to upgrade the Android version on these devices. I find it hard to believe that devices when have had less than a year only support a five year old operating system.
I guess I should be glad that we added a ChromeBox to all of our ViewSonic boards. It's unfortunate that we based our purchase on the demo of the myViewBoard apps and features. Of course we have fought with the wifi on these devices for almost a year now, so we haven't been able to utilize any of the built-in apps yet. Probably not even worth the ever to learn and train our users something new. We'll probably just rely on Google Classroom and other apps.