In order to upload games to a V3 via Mini USB, you need to enable a "Java App Loader" under your Java Settings on your phone. In order to do so, you need PST. The program needed to upload the games (in .jar/.jad files) is called Midway 2.8. A full guide on how to do this can be found
here.
For any additional help, or download links to the needed software or games just send me a pm asking or send a pm with your email and I would be more than happy to help.
Looch.