Just bought a z1 with upgraded software. Seems like half & half say the 2 wire bypass is possible but the custom radio store tells me the upgraded software makes it impossible for a bypass. IS this accurate?

Can someone direct me to a diagram if the bypass is possible?

Also, where is the best place to buy an ipod connector?

Yes, the 2 wire bypass works with the Z1 upgraded to Z3. A link to the instructions are in the sticky post at the top of this thread. Never listen to the local install shops