I don't recall exactly how long it took. I realized after 5 minutes that all I was going to see was the same screens repeated over and over, and that the installation was going to take a bit of time. So I went off and did a few other things around my apartment while I waited. I'd say it took mine maybe 15-20 minutes to fully install.
If you can't dazzle them with brilliance, baffle them with bull ****