PIPO Tablet is equipped with Win 10 and Android OS that can switch from each other easily without any problem. As we all know, it is a little difficult to find the upgrade files for the Android OS, and there is a little bug for the new files. Do not worry, the developing team are try their best to solve it early, and once we get it, we will update it on our website at first. There are several models in stock, you can look and buy it at here: https://www.pipo-store.com/buy-pipo-tablet.html