# Firmware upgrade This section provides instructions on how to upgrade the firmware (FW) on your device. By following these instructions carefully, you can ensure optimal performance and enjoy the latest features and improvements. Please read and understand the instructions carefully before you go ahead. Before upgrading the firmware on your device, it is essential to ensure that you have the necessary equipment. In addition to your DAU, you will need a computer with internet access, an SD card reader, the latest FW file, and a mobile phone with the X-trodes Commander app. Follow these steps carefully to upgrade your DAU’s FW: 1. Download the latest FW files to your computer and upload them to your SD card. 2. Return the SD card to your DAU and turn it on. The status LED should blink green. 3. Download and install the X-trodes Commander app to an Android device. Verify that no additional Commander app is installed. 4. Open the Commander app and pair your DAU. 5. Click ‘UPDATE’ in the top right corner, then select ‘INSTALL UPDATE’. During the upgrade, the status LED will blink blue. When completed, it will turn solid green. To complete the process, insert the SD card into a PC, delete the files and insert back into the DAU. To confirm the latest firmware version, check the version number displayed at the top of the device fitting screen. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://emotiv.gitbook.io/x-trodes-user-manual/device-maintenance/firmware-upgrade.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.