You do have the latest official software release for the Z30 on Verizon. In order to get 10.2.1, you have to load a "leaked" OS. I currently am running 10.2.1.2141 I installed using the autoloader method as described here
http://m.crackberry.com/autoloaders-os-10212142 make sure to read the the tutorial in the link within the article. Loading leaks can void your warranty as I understand, but this one has been officially released elsewhere, so it should be good. I've had zero issues with it. If you follow the process described, it's fairly easy. It does take some time though. For me, the whole thing took about an hour and a half. If you don't restore, it should take less. Make sure to read all the info given so you know what to expect.
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