There are two (2) Software bundles you need. First you need Desktop Manager. Make sure it is the latest version 4.2 SP1. Open DM and click Help >About. It should say 4.2.1.8.

THEN, you'll need the Operating System Software package from Verizon's website. I just looked at Verizon's OS download site and I don't see the software available. I think you are out of luck until Verizon releases the OS for download.