You need a USB A to Type C or USB to USB male to male cable to restore the firmware, is explained on the wiki https://wiki.friendlyelec.com/wiki/index.php/NanoPi_R6S , on a window pc download and install DriverAssitant_v5.1.1.zip, download rk3588-usb-friendlywrt-22.03-20230704.zip extract it and exe...