TouchScreen and flash downloads

Hi, I have a Chuwi Hi10 Pro, model CWI529 with serial number HQ64G42171100896.

My daugther broken the touch screen and I need to know wich touchscreen will fit in it. I bought two and none worked.

By other hand I will like to download the latest flashes for restoring the tablet, you know, android + windows + bios.

Thank you.