Hi there! I understand you're trying to update the Radio Tunes app on your Android phone, but the update button isn't working. Let's figure this out together.

First, just to clarify, is the update button inside the Radio Tunes app itself or is it the update button on the Google Play Store? Also, are you seeing any error messages when you try to tap it? This info will help me guide you better.

Meanwhile, here are some basic steps we can try:

1. Restart your phone. Sometimes a simple reboot can fix button responsiveness issues.
2. Check your internet connection and make sure it’s stable and not overcrowded with other downloads or streaming, as that can interfere with app updates.
3. If it’s the Google Play Store update button that’s unresponsive, clear the cache and data of the Play Store app:
- Go to Settings > Apps > Google Play Store
- Tap Storage
- Choose Clear Cache and then Clear Data
- Restart your phone, then try the update again.
4. Try updating Radio Tunes from a different network (Wi-Fi vs cellular data) to rule out connectivity issues.

If you’ve already tried any of these or if the button still doesn’t work, let me know so we can dive a bit deeper! We can also explore if there’s a temporary problem with the app servers or if reinstalling the app might be needed.

Are you comfortable trying these steps right now?