

Theories were that the old firmware was causing unnecessary writes to the chip that stores the Thunderbolt controller firmware, causing wear over time. This snippet seems to suggest that there's a wear-out problem somewhere related to Thunderbolt 3, but not specifically where.
Lenovo critical updates stuck nios update#
Revise FW version typo,"43.0.0" is typo, it should be “43.00”, they are the same version, no need update again.ĭO NOT FORCE UPDATE Thunderbolt Controller. This Firmware is just for units which Thunderbolt BIOS Assist Mode is set to "enabled" in the BIOS. Summary: Lenovo ThinkPad X1 Carbon Gen6 Thunderbolt Firmwareĭescription: Lenovo ThinkPad X1 Carbon Gen6 Thunderbolt Firmware ThinkPad X1 Carbon Gen6 Thunderbolt Controller: Here's a snippet from the X1 Carbon Gen6's changelog (found by u/heljara). Based on Lenovo's statement, any other Thunderbolt 3 devices on the same firmware and controller would likely exhibit similar symptoms. We're still aren't sure exactly what the purpose of this firmware is for the Thunderbolt functionality, but online resources are generally pointing towards it being the Intel-provided firmware for the controllers themselves (basically, it provides TB3 functionality). This was based on the fact that, for one, the NVM firmware is highlighted specifically in the knowledge base page, and also because each device affected has had their NVM firmware updated. The issue seemed to be Intel's (not Lenovo's) NVM (Non-Volatile Memory) firmware. What was our theory on why this was happening?
Lenovo critical updates stuck nios software#
A number of ThinkPads rely on the Thunderbolt 3 chip for communicating with their power delivery ICs (based on the schematics, part numbers, and change logs), so the Thunderbolt chip failing (either software or hardware wise) could mean restricted (15w) or no charging.

Added Lenovo's official statement about this issue.I'll be updating this article as more information arrives, but here's what we know right now. There's an on-going investigation (and discussion) happening on Reddit about this topic, which can be found here. We're still learning more about this issue as time goes on, but currently we don't have any official information other than what's publicly available (like info from the knowledge base). Recently, we published an article about a widespread issue with Thunderbolt 3 on certain ThinkPad laptops.
