I had the same issue and found on this wintechlab page that Conexant driver update could fix.
I had uninstalled that updated driver because of sound issues.
I installed the latest driver and could successfully update my computer.
There are other actions, as well on that page, which I didn't need or follow.
Hope this helps.
Yes, I can confirm this. The update of the Conexant driver did do the trick (got the stuck at 61% before the driver update).