I think I would first shut it down and remove the sd card, then copy off any data. Then try plugging it in to a PC with a good data cable to see if you can parse any device and onboard sd folders to pull any data off. After that try a factory reset and see where you get (Power plus volume up.)
Rooted phones simply cannot be updated via FOTA without puking, regardless of recoveries, etc.
If the factory reset doesn't get it back, you may end up having to follow the unbricking guide with the LG flash tool and then flash one of the base roms. I'd pick the V07 odexed...then turn it on, let it stabilize, update the prl and profile, and then wait for the FOTA to come along and then let it install. Then you should be at V08, then re-root, IIRC the stumproot is the method for V08.
Good luck.