The Human Headphones App is available for iOS devices by searching the App Store or via this link: https://apps.apple.com/us/app/human-headphones/id1266365579
You can get the Human Headphones App for Android devices by searching the Google Play Store or via this link: https://play.google.com/store/apps/details?id=com.human.sound
After installing the Human Headphones App, you can update the firmware on your headphones by opening the Settings menu 
at the top left of the home screen. Then choose Device> Firmware Update.