How do I get help with an issue with the Mustang GT amp? Use the Submit a Request link at the top of this page to send a message to our Customer Support team. Related articles How to update the firmware on a Mustang GTX, GT or Rumble amplifier Mustang GT Firmware Version Release Notes I'm having trouble connecting the Tone app to my Mustang GT amp over Bluetooth What is the Mustang GT Firmware Patch Utility? I'm having trouble connecting my Mustang GTX, GT or Rumble amp to my WiFi network