Android Install APK
From embeddedTS Manuals
APKs can be installed just like on any other Android device. On the device go to settings->About Tablet and press the "build number" until the text states "You are now a developer". Go back to Settings and there is now a "Developer Options" menu. Under Debugging enable USB Debugging. You should now be able to run adb commands to install apk files.
adb install </path/to/app.apk>