Sorry for the confusion. I installed the current version as of about a week ago. This was the first and only time I've ever installed, so there's no way I could have an old version unless the link to the current build package was screwed up.
I linked to that article because it seemed like it was relevant to the discussion. If not, then any idea on how I could track down what is causing dual booting to fail on my mini?
Thanks.
Edit:
Maybe this is a documentation issue. I'm following these directions from the iPodFAQ:
" How to start the original Apple Firmware
Shut the device down by holding PLAY/PAUSE. Then, press MENU or SELECT to boot the iPod. Immediately after doing this, turn on the HOLD switch. "
When I do this, the apple logo appears. After a couple seconds, the backlight comes in, still with the apple logo. A couple seconds later and the backlight goes off (still showing the apple logo). Then there's a longer period, about 10-15 seconds where it just sits there with the apple logo and then the screen goes blank for a second, like it's rebooting. Then the process starts again.
When I eventually turn off the HOLD switch, it finishes the cycle and reboots into rockbox.