# BiBoard V0

When you use a USB type-C data cable to upload the firmware for the **BiBoard V0**,  if there is **no** serial port in the port list of Device Manager. 

{% hint style="info" %}
Note: The connection for uploading firmware is to be made directly to the **BiBoard V0** and NOT to the outside charging port on the battery.
{% endhint %}

<figure><img src="https://1565080149-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQ6a951Q6Jn1Zzt5Ajr-887967055%2Fuploads%2FnWC0CjQgeux21yRWvbUe%2Fimage.png?alt=media&#x26;token=f256a8b2-b270-4d6e-97d1-0c42d446295c" alt=""><figcaption><p>Bittle X</p></figcaption></figure>

<figure><img src="https://1565080149-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQ6a951Q6Jn1Zzt5Ajr-887967055%2Fuploads%2FBJxEikbap0vbkeKqS8kl%2Fimage.png?alt=media&#x26;token=d2c7a179-7b3e-4742-a080-38ef84079f8f" alt=""><figcaption></figcaption></figure>

Please download and install the USB driver:

{% embed url="<https://www.silabs.com/developer-tools/usb-to-uart-bridge-vcp-drivers?tab=downloads>" %}

For more details, please refer to the [BiBoard V0 USB Driver to access the serial port](https://docs.petoi.com/technical-support/useful-tools#biboard-driver-to-access-the-serial-port).