Plug your phone into your PC. Look how to get it into download mode. From there you can restore your software.

 

It doesn't stay on long enough to do this. After the error message it shuts off.

 

press and hold the volume down and the home button at the same time, and press and hold the power key until it starts recovery. see if you can restore it to stock by doing this. after it comes up asking about pressing power or other buttons release all the buttons.

when it comes up asking you to press the power button twice doing so will lose all the data on your phone but it should get it up and running again.

 

The app he removed was a system app, so going through recovery process won't fix the problem. The only fix is to re-flash the factory firmware cab file he downloaded.

 

I have the same phone and just rooted it myself. Now I am afraid to remove any of the crap that they installed that I don't want.

I wish they would come up with a working custom rom for jelly bean for this phone.

 

Yeah I've been trying to figure out a way we can get custom roms but so far I've had no luck. LG has really made this phone a pain in the neck lol

 

where did you find the .cab file?

 

I too have the exact same thing happening to me.

I have tried everything. In fact, I am willing to ship this phone to anyone out there to see if they can fix it.

Has anyone had any luck finding a fix to this yet?