Xiaomi Wifi Router 3G - 18.06.x / Wifi issues 2.4GHz + 5GHz

Installing and Using OpenWrt
12

That's unfortunate. You could try adding kmod-usb-dwc2, and possibly kmod-usb-ohci, kmod-usb-uhci, kmod-usb-ohci-pci and kmod-usb2-pci.