Make sure that you are following these steps before updating:
- You have the latest version of T-1 config installed.
- You have connected the T-1 directly to your computer without any usb-hubs.
- You have removed all MIDI cables from the T-1.
- You are not sending any MIDI including clock via the usb.
If the process keeps failing see “How do I perform a manual firmware update” to update to the latest version included in the T-1 Config tool.