From Chuwi Official,
I mean that you can return your tablet to Chuwi factory if you want to upgrade your old hi12 (only win10) to dualboot (win10 +android) ,but the mainboard and touch panel are original except for adding android os. And upgraded hi12 don’t still support stylus. Only new version hi12 can support stylus.
So old version hi12 and new version hi12 are difference between mainboard and touch panel.
