Display the installed firmware version by selecting About in the Menu on Mustang™ LTX.
Version Information 10/6/2025
Firmware v1.0.18
Release Notes:
- Fixes
- Changing the preset mode over from the Tone app now syncs to the footswitch
- The preset is reloaded after a new preset is saved to the current preset index through Tone
- Amp no longer freezes when changing the amp/effect via Tone while at the bottom of a long parameter list on the parameter page
- USB Audio now delivers correct right and left channel audio data, instead of copying right channel data to both channels
- Processor utilization improvements to prevent UI lag in certain high processing preset configurations
- Communication / connecting to Fender Tone no longer causes USB interruptions
Firmware Update Instructions
- Turn the amp off
- Download and install the Fender Device Manager app
- Open the Fender Device Manager app
- On a Mac computer, click Allow in the "Allow Device Manager to connect to devices on the local network” prompt
- Connect the amp to a computer with a USB cable
- Open the Device Manager app and click the Select button for Mustang™ LTX
- Press and hold the Firmware Update button on the back of the amp (near the USB-C port) while turning on the power switch
- You should see an Update button in Fender Device Manager
- The red LED next to the firmware update button should be blinking
- Click the Update button in Fender Device Manager
- Select Yes in the next prompt to start the update
- The update will take several minutes. Wait for Fender Device Manager to display the update is complete before disconnecting the USB cable or turning off the amp
- When you see the “Firmware has updated successfully” message,
- Turn the amp off
- Wait for the red LED next to the firmware update button on the back of the amp to stop blinking
- Turn the amp on again
- The firmware update process is now complete.