I upgraded an old PHillips DSR6000 which I should have done 3 years ago when I bought the thing. Used the Hinsdale guide, it worked awesome! I have another DSR6000, which broke a couple of years ago. Bad hard drive, I'm pretty sure. I put the bad hard drives into the good Tivo, and I had the same problem. Rebooting all the time. After the upgrade, I figured that I would just take the old drives from the good Tivo and put them into the bad one. I took the card from the good Tivo and put it into the bad one as well. I thought I would start it up and test it to see if it works. It says that I have a hardware problem and I should restart. Also, it says to replace the access card. Is the access card good for only one Tivo? How about the drive image? Can I use the same DSR6000 image for both boxes? I bought them at the same time, and they are identical.