Previously I had issues with installing v6.0 of the CP210x VCP drivers on Big Sur v11.1. Original post - https://www.silabs.com/community/interface/forum.topic.html/new_cp210x_vcp_driveronbigsur-5icm
Now, after updating to 11.2.3 the drivers are no longer installed in my machine and I get another error when trying to install the drivers I had received from the above post.
Attached is the text from the error screen...
Thank you for contacting to Silicon Labs technical support regarding to VCP driver.
In fact, we have tried to install the latest VCP driver version on our environment, and it still work properly.
Regarding to your issue, Could you please try to re-install by using the driver file attached (below)?