Q1: Is the "update" on the pioneer site a "motion bypass" or not? I have read conflicting reports.

Q2: Does it matter what date the Z2 was made ? What I mean by that is. Are the older Z2 models required to do the 2 wire by pass method ONLY or can the older models do the bypass via the pioneer software update { If indeed the software update is a bypass} Which is why I am asking Q1 to confirm.

The Pioneer update is not a bypass.

1) do the 2.13 firmware update

2) do the 2-wire mod

3) update with the 2.14 pioneer s/w if you want.

The firmware update you see on Pioneer's site is exactly what it says, a fix for freezing issues experienced by some Z1/2 customers