To update your Acaia Lunar, follow these steps: Ensure your phone is close to your Acaia product and connect them. Open the Acaia app on your phone. The app will display your current firmware version and prompt you to proceed. Select "Next." The app will then initiate the firmware transfer, and your Acaia product will enter update mode. During the update process, ensure that you do not turn off your Acaia product. Once the update is complete, your Acaia Lunar will be running the latest firmware version.