Hi,
I tried the second method and i must admit there are some improvements in system responsivity, and my usb drivers are now dated of june 2020 instead of june 2006 (yeah they were that old) but i still dont have the usb 3.1 extensible host controller and the usb 3.1 hub in my device manager .
Thanks for helping out
Microsoft uses the 6/21/2006 date for drivers for a lot of the generic devices. They are part of the OS. You can see an explanation here:
https://devblogs.microsoft.com/oldnewthing/20170208-00/?p=95395
Some of the items in the Device Manager USB controllers section have the generic date while others have more recent dates.
Do you have something plugged into your USB 3.1 port? Sometimes items do not appear in Device Manager if nothing is plugged in. Did you use the "Show hidden devices" view in Device Manager to see if it might show up?
JohnD