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.