How to uninstall Lenovo Legion BIOS update GKCN53WW on Windows 10 & 11
This BIOS update sounds like a nasty mess, but since we’re talking about Windows, there is an apparent workaround.
As described on several of the above threads and confirmed by us, removing and reinstalling the previous BIOS could resolve the problem. However, this may or may not work for everyone, so if you do give this workaround a whirl, you’re doing it at your own risk.
To go back to the previous BIOS update,
simply download and run the stable BIOS version (GKCN50WW).
If you’re unable to downgrade BIOS directly from the setup, make sure the device allows flashing of BIOS to a previous version. To do this, enter the Lenovo BIOS Setup Utility from the boot menu and look for an option related to rollback or flashing of BIOS, and set it to “Yes”.
Press F10 to save the configuration settings and exit, and perform the BIOS downgrade again. While downgrading the BIOS, do not shut down the device in the middle of the process as it can cause serious damage to the system.
Another option might be to wait for Lenovo to acknowledge the mess and hopefully issue an emergency fix. This is assuming you can deal with the described problem or you have a backup device.