A Catalyst may seem "dead" if a firmware update fails to complete itself. If the Catalyst fails to update:
- Power down the amp and close the Updater app.
- Open the Updater again, then power up the Catalyst while holding A and B to put the unit into bootloader mode.
- You will then need to manually select the correct Catalyst product from three choices presented by the Updater.
- Select the latest firmware version, then accept the Terms and Conditions.
- After the update is complete, power down your Catalyst amplifier, then “RESET” the amplifier by holding down the “B” and “MANUAL” channel buttons while turning the power switch back on.