arfie24

The most recent update for the Thunderbold Firmware is [Version N25TF14W from 2020](https://fwupd.org/lvfs/devices/com.lenovo.ThinkPadN25TF.firmware), dubbed Version 43 by lvfs. The Lenovo website advertises [a critical update for Version N25TF16W from 2021](https://pcsupport.lenovo.com/de/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x1-yoga-3rd-gen-type-20ld-20le-20lf-20lg/downloads/ds502807-thunderbolt-firmware-update-utility-for-windows-10-version-1703-or-later-thinkpad-x1-yoga-type-20ld-20le-20lf-20lg?category=USB+Device%2C+FireWire%2C+IEEE+1394%2C+Thunderbolt).