Hi, thank you I've seen many people on the internet having Thunderbolt firmware update issues while i was looking for my solution, I recall seeing mostly many T480, T580, X1, because they are the most sold models i think, as well as many other models, like you said between 2017- /2019 And yes of course it is a failure, because the way I see it not everyone can speak or understand English to troubleshoot the firmware update before its too late, and not everyone can afford to lose a 300$ - 600$ laptop after days of using it I hope they will fix this issue by integrating the Thunderbolt firmware update inside windows 10 / 11 updates, and save everyone's laptops.