sounds like a good plan, and have a couple of questions. If I put in the new drive I think it will upgrade my firmware again to ver 2, does this mean I have to do some sort of downgrades to go back to the original drive? If so hopefully its not too risky. oh, just remember another question, I saw a post on hear that you wrote that when you upgraded to your z3 drive your guide voice was not working just like what was happening to me but when you went back to the original z1 it was fine, did you ever resolve that? All these drive swapings doesnt cause the drives to get locked do they where I wou