SKCHENG, glad your dock is now working, but I dont think the solution is particularly good; it means pretty much everyone with a Thunderbolt 3 gen 2 needs to get another dock shipped …

I found two separate, easy to download and install softwares Lenovo Diagnostics Tool and Lenovo Update that work well. But they don't include some Lenovo Vantage functions.

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I updated Driver for Y540 keyboard Firmware update - 10 [64] - 00000044 in Lenovo Vantage and after rebooting the laptop, keyboard stopped working and the driver has not been installed …

For some reason, I keep receiving a driver update called 'Intel(R) Corporation - System - 10.25.0.3633' that replaces the following devices in the 'Sound, video and game controllers' …