It is possible that you entered USB Transfer Mode instead of Firmware Update Mode. All HeadRush boards feature these two distinctive USB modes.
Although the USB connection is the same, you must select the mode you want to use before connecting the HeadRush board to your computer. Please find instructions for doing so below...
MX5, Gigboard, Looperboard and Pedalboard
1. From the Main Rig screen, tap the 3 dots in the top-right corner of your screen, and select Global Settings.
2. From the Gobal Settings screen, tap the 3 dots in the top-right corner of your screen; here, you will see both the USB Transfer and Firmware Update options. Please choose the option that meets your requirements.
Prime and Core
1. Tap the grid icon in the top-left corner of your screen.
2. The options for USB Transfer and Firmware Update will be located in the 3rd row of the screen.