OK if you goto Ozi site and download the software then install it:
Then go here and get your user name, and user code POST # 31

[Only registered and activated users can see links. ]

Once you have an active OziExplorer you can up date anytime for Free it is an life time key.
Ozi Andriod key is not upgradable from Ver 1 to Ver 2.
OziCE is the same is not upgradable Ver 1 to Ver 2