To update the firmware of your Bose speaker, you will need to follow these steps:

1. Download the latest firmware update for your speaker from the Bose website.
2. Connect your speaker to your computer using the USB cable that came with the speaker.
3. Locate the downloaded firmware update file on your computer and unzip it if necessary.
4. Follow the instructions provided in the firmware update documentation to complete the update process.

Note: The exact process for updating the firmware of your Bose speaker may vary depending on the specific model of speaker you have. If you are having trouble updating the firmware, you can try consulting the user manual for your speaker or contacting Bose customer support for assistance.