Step 1- Download and install the desktop Tone app, not the Mustang GT one Step 2- Before starting the Tone app, connect your amp to your computer using USB and turn the amp on while holding down the encoder button for at least 3 sec. The LCD display on the amp will be blank. Step 3- Start the Tone app. It will prompt you to start the firmware update, and then to restart your amp Step 4- Close and restart the Tone app to sync it to your amp You'll now have the original 30 presets, including any changes you've made and saved, and you'll also have 30 new blank preset locations, which you can load with any of the additional 99 factory presets in Tone, which you can audition before loading into the amp. And you can of course modify any of them to your liking, just like the original 30 presets. And, of course, you can start from scratch and create your own presets in any of the 30 empty slots without any need to be connected to your computer.