dsforthman
Newbie
I have done this, and it works. Just use the following guide:
[How-To] Rooting LS670ZVD with GingerBreak (no reverting and OTA works too!) - Android Forums
Yes, it's for the Optimus S, but it works well on the Optimus C.
[How-To] Rooting LS670ZVD with GingerBreak (no reverting and OTA works too!) - Android Forums
Yes, it's for the Optimus S, but it works well on the Optimus C.

