I've heard there's a CD to upgrade the firmware which changes it to RV mode which bypasses the security.

Is there such a cd upgrade?

If not how do I exactly bypass the security?

My installer says there are no wires to ground?

I have a Z3.. not a z1 or z2 with a z3 upgrade.

Your installer does not know what he/she is talking about. No CD will bypass the Z3. You MUST do the 2 wire bypass as described in the stickies in order to bypass the security while in motion.

Not to add confusion to the discussion.....

Well it is possible that something like this could exist. But I have to admin I have never heard of somehting like this.

The bypass is not a magical "hardware" thing. The software in the unit is looking for 2 wires to be grounded and if it sees those wires grounded it will unlock itself. It's possible to make an update disk that unlocks itself without looking for any conditions. But in order to do that you would need the source code and compiler that Pioneer uses.

I highly doubt that a disk like that would be created by an outside hacker. Pioneer could make a disk like that but I have never heard of one.

It's possible that something like that exists, but more likely I agree with Garrett, I don't think your shop knows what they are talking about. My guess is they have an update CD from Pioneer which removes the flasher bypass and installs the 2 wire ground bypass and they ground the 2 wires.