Chuwi Hi10 Plus software and boodloader killed by virus, need file for USB to load 64 G only android 5.1 or higher

hello, i am Holger from Germany, my Chuwi Hi10 Plus model CWI527 64 bit Serial No LQ64G42161101431, the Software and bootloader has killed the Ram 64 G completly through a virus. there is no way to boot anywer, is there a way to make a big partion 64 Giga only for android 5.1 or higher ? If yes, please i need files for download and description what i must do, please. i think a bootable USB Stick, is the best way, with file, to make or remove partions, so that i can format the big partion.

sincerelly Holger