I would like to upgrade the maps on my Z140bh, but I really don't want to pay $135 for the map up date from the official web site.  Someone on Ebay is selling the SD card with the 2015 map update for $20.  They say that the card is new and never used.  Just in case they are lying, can this software be installed on more than one navigation system?  I saw that you have to get on the Pioneer web site and enter your device number and they will give you a unique password.  

I purchased from an ebay seller and had no issues with the install. there was no password. just pop in the SD card and the unit will do the update itself. I did have an issue with my dinosaur ipod video working afterwards. but with some help from this forum, I got it working again and all is well. just unhooked the battery cables for a few minutes and have had no problems since. apparently, a "hard reset" of sort will sort these problems out. good luck