To REVERT AVIC System back to Lower Software Version all info is here:
http://www.the12volt.com/installbay/for ... pn=0&tpn=9
OR FOLLOW INSTRUCTIONS ON THE BOTTOM:
Also Password is there too. Just to let you know if you are REVERTING AVIC-80 or 90DVD
you will need CD-R11 REMOTE with all other Units no need for Remote. Software Version that you reverting your Unit to will be NEEDED also.
1. Eject any DVD's /CD's from unit
2. HOLD EJECT and at same time press the reset button with toothpick or other tiny instrument.
3. Keep holding the EJECT button as screen will cycle in and out. As screen comes back out, you can release the eject button.
4. If all of this has been done successfully up to this point, you should be staring at a screen that says in black and white "Press Reset Button" DO NOT press the reset button or you will be doing steps 1-3 again.
5. Now this is the time to enter the code.  While staring at the monitor screen with the message on it, now use the Joystick to enter the following movements:
IF YOU REVERTING AVIC-N1, N2,N3, D1 or D2 use the BOTTON which you normally use to change Radio Stations (the one on Right Hand Side of your Unit Face Plate)
PASSWORD: UP  RIGHT  UP  RIGHT  DOWN  RIGHT  DOWN  RIGHT    PRESS IN JOYSTICK  and you should be rewarded with a screen that has some red in it and disappears quickly and is replace by one that looks like this: