I have the CD-70HDD upgrade disc. I used my one time to update my personal head unit. Do you think I can take other hard drives and install into my Z1 to update with the same password? Wanting to try but don't want to screw anything up. I assume the worst that can happen is it will tell my incorrect password and deny me. Any advice, warnings, or educated opinions would be appreciated.

I was going to answer you until I saw a double post.

lol just tell him hype

I only double posted because I wasn't sure anyone would reply to the other due to not reading all of the posted replies. I know, I know. But, bettrer safe than sorry. Rookie mistake huh. LOL