1. Connect the H9 in question to H9 Control on a desktop computer via USB.
2. Backup up your presets and system settings, if you’ve customized any.
3. Reinstall the firmware by going to the PEDAL tab, STOMPBOX SOFTWARE, then choose the latest firmware and click INSTALL SOFTWARE.
4. After reinstalling the firmware, conduct a factory reset by turning the pedal on while simultaneously holding down the right footswitch and the black knob until you see [INITIA] on the display.
Please report back if it works.