Onboard UTOC Usage

Notice

It is not recommended to use two UTOICs; burning and connecting will be very troublesome.

If you do not need to use the onboard UTOC, run the following command without any prompt:
```
sudo sed -i 's/usbhost2/offusb2/g' /boot/FlyOS-Env.txt
```

To restore, run the following command without any prompt:

sudo sed -i 's/offusb2/usbhost2/g' /boot/FlyOS-Env.txt