![]() While we believe that the impact of this will be minimal, should customers experience difficulties, they should contact Lenovo Technical Support who will be glad to help. ![]() Lenovo identified and provided a fix for this issue in August 2019, since when the patch has been pushed through Lenovo Vantage to affected users. Lenovo gave us this statement regarding the issue: Meanwhile, the reason why some ThinkPads with Thunderbolt controllers like the X1 Extreme or ThinkPad P1 are not affected is that they use a different firmware and never were exposed to the flawed version. ![]() The issues began when the flawed Intel firmware update was released last year. This also explains why the issue is a recent phenomenon: Affected older systems like the Lenovo ThinkPad T470 or T480 ran fine for years. This firmware version irreversibly damages the SPI-ROM of the Thunderbolt controller over time. ![]() They occur because one of the firmware updates released last years was flawed. What we learned is that our suspicions about the cause of these ThinkPad Thunderbolt controller failures were pretty much on point: The failures do not stem from a defective controller chip design or overheating. Additionally, we sent some questions to Lenovo about the ThinkPad USB C failure - questions that were answered. We recently reported on failures of Thunderbolt controllers and investigated the topic further in a comprehensive way.
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