CHUWI Hi10 CWI515 Q64G421605XXXXX

Good morning.
I have a CHUWI Hi10 CWI515 Q64G421605XXXXX with dual sistem and the last windows updade something was wrong and I can not load Windows. I tried to use the Windows Usb to repair the Windows and it does not work.
I think the only way is reinstall windows but I can not find the download adress of my model, please can you give me the adress link?

Thank you very much in advance.
Best regards,