Can someone give me a step by step instruction with better English? The OP broken English makes it hard to follow.
It is very good explaned in the first post.
Anyway it is a very easy installation. Unpack the zip file into a folder, start the tablet in dnx mode, double click on FLASHER_v3.0-(-just_press_twice-)
A menu will appear, just select your desired option and voilà!