The bypass on the Avic and I have it running is the following:
You take the mute wire which is originally in the "1" position, you then lift the plastic tab of where its inserted into, pull the wire out, then place it into the 4 position on the bottom, it should be in between 2 black wires. You then ground the newly placed mute wire, the parking brake wire onto the same main ground of the radio. I used a splicer to the main ground I then added a wire and used a female/male disconnect that connects the mute and the parking brake wire to this newly introduced ground splice.
Here are the two forums where I got this information:
AVIC411.com :: View topic - AVIC "F" Series Bypass (Picture Guide)
AVIC411.com :: View topic - Software mod "bypass" confirmed - Put away your wi
Also you will need to load the new firmware which speeds up the load time of the unit. I also did this and notice a speed up of the unit at boot time
After that you manipulate the software inside the configuration file on the unit to a new value. The default value is 16 and I changed it to 128. This value sets the speed at which you can enter locations, select poi's while you are moving.