I followed the same procedure for my HP spectre 360 laptop. I uninstalled the Connexant audio drivers in the game controller from the device manager. Also deleted the driver. Do not restart. Then use manual command for the upgradation to 20H2 upgrade from the microsoft site. The Upgrade which took more than half hour went smoothly. At the end the connexant drivers were back. You can then update the audio driver from the device manager. Unfortunately I lost the Bang and Olufsen enhancer in the process. But I reinstalled from my original drivers which I had saved seperately. I got the audio system back as it was and also the latest version of Windows 20H2 version. Thanks all for their inputs.
Many thanks indeed for your tips.
I followed your advice with my HP Spectre 360 and managed to update it to 20H2. Some of the drivers did not return after the installation. However the HP Support Assistant helped to install the correct drivers in one go.
With my HP Zbook Studio G3 I tried to follow the same route, but it was not a great success. I uninstalled the speaker driver, sound, video and game controller, both provided by Conexant. I tried to run the Windows.Iso file I downloaded, but it could never complete the installation as it did with the HP Spectre. I was desperate with my Windod 10 ver. 1909, which kept erasing systems restore points, no more allowed system restore anyway, etc.. I finally chose to format my Zbook and reinstall the Windows 10, which automatically brought the version 20H2. I had no major problems with drivers, my older Conexant drivers returned the same way as with HP Spectre.
I later discovered at various web-sites that it is not only the Conexant ISST drivers which cause conflicts with Windows 10 updates, but also the touch-pad driver supplied by Snaptics. I use a large HP screen on my desk, which also uses Conexant sound drivers. Should I have discovered the source of the aforementioned drivers and uninstalled them before I ran the Windows.Iso file, perhaps my repair install would have worked, and saved me from the tedious formatting, etc..
FYI.. check all your Snaptic / Conexant drivers, and not only those under sound controllers, etc. before your attempt a manual upgrade..