This is what I emailed him:
I would take what Pioneer says with a grain of salt. They say a lot of things to people and some times it's completely false. They say you need the parking brake on to do this. They also say you need the parking brake on to enter a destination in the nav system or play a dvd, but with the bypass we know that at least most of that is false.
Step 1, make sure the bypass is working. Make sure the parking brake is off and that when you hit:
Menu - settings - hardware- connection status
The parking brake is listed as off. If the brake is listed as on, we have problems.
http://www.sminntech.com/z1flash.html (there are instructions here too)
Then hit menu (if you get a disclaimer screen, hit ok and then MENU again).
Look for "Address Search" and "POI Search".
See http://www.sminntech.com/images/avicz1menuscreen.jpg
If you see those, you have a bypassed unit. If you don't there is a problem.
If you passed the above tests... go to the library and follow the instructions on page 124. I would be very surprised if the whole system is bypassed except for the ability to delete some tracks from the library. It's possible you found something no one else has before