Ok, here's what you need to do.
Find someone with an uneditied V3c. If you have to go to your local Future Shop and beg them to let you hook an out-of-box one up to your notebook computer, then that's what you have to do. But you need an unedited one (or find someone online who has an unedited one).
Then, have them use P2K Commander and save all the files off the phone (everything in the "a" folder). Then, you take those files and upload them to your V3c, overwriting everything.
This should bring you back to factory default. You may have to have your phone re-programmed with your mobile number, I don't know as I've never had to do this before.
And learn from the mistake, next time, backup ALL files before you start playing
