CHUWI CWI529 android version upgrade

Hi, i have a CWI529 with serial PQ64G42161101831 serial, with dual boot win10 and android 5.1. I want to say if android 5.1 is the latest version that i can install on it. Can i upgrade this android version?How i can made this upgrade?thank’s a lot…

UP . Any News?Any help me?

No, a higher Android version is not possible because Intel did not develop Android drivers for its Z8300 and Z8350 processors, or for any afterwards, which spelled the end of dualboot tablets.
The only option to have an Android 6 is to use a cooked version such as CM12 or CM13, but it is not compatible with all models and they do not ensure that all devices work.