Tacx Neo 2T stopped working after frimware upgrade

Hello Garmin Tacx support team,
  two days ago I updated my Neo 2T with the latest firmware and the upgraded procedure conlcuded fine.
But since yesterday my tacx stopped working: plugging the trainer results in the start of the internal fan at maximum speed and nothing else, no lights no connectivity and pedals free to rotate with nearly no resistance

What could I do?

It worked flawlessly until yesteday

Thank for your help