tacx neo 2 with heating, with the on light flashing red.
Does not resist
Firmware update? Try the tacx utility app and see the explanatory videos on Garmin or YouTube - this is a bit old but gives an overview https://www.youtube.com/watch?v=-8gpez__sYs
Apologies if you already tried this/
Low ambient temp seems to be a cause of my 2016 Neo not be happy at startup (no resistance) so I put it in a warm room or in the sun (COVID-19 lockdown) to get it able to startup - bit feeble really. Lower than 5C seems to be the cause.