procedure:
1. Open/run volcano
2. select coolsand tab, then choose Built-in Boot_B
3. check format, click run
4. Hold boot key ("0"), insert usb, install drivers if needed
5. wait until finished
1. Open/run volcano
2. select coolsand tab, then choose Built-in Boot_B
3. check format, click run
4. Hold boot key ("0"), insert usb, install drivers if needed
5. wait until finished