I'm trying the update now on a friend's phone. It's over 30 minutes now it's been sitting here. It's at 50% right now, system.rfs download is displayed at the status bar on the bottom. I'm going to leave it sit overnight, but if it's still in the same place in the morning, what should I do? Restart the phone and try the update again?
Edit: nevermind. The came became unplugged somehow (not sure how because I hadn't touched it and it was still plugged in) so I just redid the upgrade process. I used a USB port on the rear of the computer this time. I forgot that I had always had that problem when flashing my SGSII.