Help Security error?


After a failed attempt of rooting a P970, each time I start the phone a screen with the LG logo pops up with the text Security Error beneath.
The only thing I can do is enter S/W Upgrade mode.
Is there any way to reset the phone, or just make it startable?


after bricking my phone like a ******.
i know how to fix it and its by a smart flash tool so this is how you can fix ur phone u can update ur phone to ics by the same way but u have to use the correct ap and cp
u can type on google how to update optimus black with smart flash tool