Problem upgrading to Kodi 17

I have a MXQ android tv box with kodi 16.0 installed. I am trying to upgrade it to 17.0 but it is giving me a hard time. When I download the apk and try to install it I keep getting the parsing error. Is my model unable to handle 17.0? Do I have to uninstall my current version first? I don’t really want to lose all of my saved data nor get stuck deleting kodi and not being able to reinstall any version.

I have to correct boxes checked under the privacy settings to download apps from unidentified sources. I would just really like to know why I cannot upgrade.