Yes... Just use Cydia Impactor. I've used it to root a couple devices now, including the L9 MS769. It's an incredibly easy root method to use. Plus it doesn't install a foreign superuser app and it doesn't have any spyware.
Download the Cydia Imp...
I think they wouldn't replace it but fix it for you. What have you done to your phone?
Flashing a rom for an locked bootloader phone?
Can you fix it by kdz offline flash?
Sent from my LG-P765 using XDA Premium 4 mobile app
My bootloader is...
Hi niggist, I'm happy with your success, could you tell me how did you do it?
Edited: Thanks anyway.
Sent from my LG P76020L-EUR-XX unlocked and rooted
It turns out I really didn't fix anything, I just got omap4boot to work. What you have...