Ok I got the 2 wire done correctly, and it was double checked and verified by 2 local shops. The software has been burned as an image with the ISO burning program that was on another post on here. I have also tried it with Nero. The bypass update still does not work. The firmware update does not work either. I do not get a yes or no to run the update. Instead I get this. If I install the disc the bypass works for a short time then goes back to the regular settings.
From this picture, I would say you already have that update. That screen means that you have a valid update disk but the update has already been applied. Then if you reset the unit, little recessed button to the right of eject, you should be fine.
If you are not fine then you have one of problems (or both), you have the entirely wrong update disk or the 2 wire ground isn't done right.
you have the entirely wrong update disk:
This is if you have an Avic Z2 and you are trying to load the Avic Z1 bluetooth update disk or something like that. If you have an older Z2, then you need the image from method 2 of
http://www.avic411.com/forum/viewtopic.php?t=8783
If you have a Z2 and that's the disk you are using.... or if you have a Z1 and you are using the bluetooth update disk or the random lock up update disk, then you have a problem with...
the 2 wire ground isn't done right:
This is by far the most problematic issue, I would say.
http://www.sminntech.com/z1flash.html#newbypass
Make sure the shops checked the problem parts of this. What is happening?
Snip from my web site:
I did what you say to above and when I start driving around I get a pop up message about my parking brake not being connected properly and I get locked out again.
I get this a lot. You are not alone. What happened is that you didn't do "wire #2" correctly. In the instructions above, wire #1 is the parking brake wire. Grounding that will bypass the unit while you are not moving. Grounding wire #2 will keep the unit unlocked when you start moving. If wire #2 is not grounded properly then when you start moving it will lock you back out again and put up that pop up message. I know you think that you grounded that wire correctly, and most likely you did. Where most people have problems is in the connector itself. Either the terminal is not oriented correctly or it's not inserted all the way or something. But check and double check that connector. That's where every single problem I have seen has been. Trust me this procedure works and it works well. If it's not working then double check what you did. If you are still getting the pop up message, the only way to get rid of it is to press the recessed button to the right of the eject button (the button the opens the face of the Avic-Z1). This will lose your AM/FM radio presets but not much else.