I would like to upgrade my Acer Iconia Tab A200 to the latest Android OS. I am a novice astronomer and would like to install the SkySafari 6 Pro app, but this app requires at least Android 4.4, Kitkat. My Acer Iconia Tab A200 tablet presently has Android 4.03, Ice Cream, Image Version Acer_AV041_A200_RV10RC01_PA_Cus1. I understand that if I am registered as a tester or developer, then I should be able to download the Android 11 beta, but I would be happy with Android 4.4 or higher. Would someone be able to help? Many thanks!