Chuwi Hi10 Pro disable windows failed

I want to disable windows boot so try it reading official guide [Hi10 Plus] [TUTORIAL] Remove Windows on the Dual Boot tablet

“Start to Flash” click to start, but progress leach to 25% then stop. After about 20 seconds it appears messages about failed. Tablet status also disconnected.

I have tried sometimes but all failed.

Before failed, the tablet was changed display to FastBoot? screen.
I find out this situation on the internet, but i can’t find any solution.

Does anyone have knowledge of this situation or solution?

Thanks in advance.