Can a TTS Mastertune be reset if it has been used on another bike?

If you send it back to TTS they can add a slot to the blue dongle, pain in the behind but short of buying another one that's your only option, I'm not even certain they are still doing that either as they had a supply issue with parts and now seem to be only pushing the green dongle and the Bluetooth dongles, you would have to contact them and ask, good luck.

Where are you located mate ?  Supertuner pro can be "unlocked" here in Australia. Deffo NOT a TTS dongle.