--- layout: page title: Configuring firmware permalink: /configure-firmware/ nav_order: 2 parent: Firmware Guide --- ## Once you have opened the project, you should see something on the left side like this. {% include custom/images/image_2.html url="https://i.imgur.com/VZeI39I.png" max-width="500" caption="" alt="" %} ## Open the `platformio.ini` file. {% include custom/images/image_2.html url="https://i.imgur.com/ySzUMPO.png" max-width="500" caption="" alt="" %} On lines 17 and 18 replace the placeholder text with your correct SSID (WiFi access point name), and password respectfully. {% include custom/alerts/Note.html content="Make sure your wifi router has a 2.4 GHz band. While most do, this is not always the case. Setting each band, (5GHz, and 2.4GHz) to different SSIDs is recommended though not required." %} Double check that you have correctly entered your WiFi credentials and that said wifi network has a 2.4GHz band. ## [Now, move on to uploading the firmware](https://redhawk989.github.io/EyeTrackVR/building-and-flashing-firmware-manually/)