[Q] lg optimus g e975 install recovery
I have a LG OPTIMUS G E975 Korean edition
I have bought a pre-rooted phone from a friend with Jelly Bean 4.1.2 running on it. I want to install a recovery and then a KitKat running custom ROM but I can't install a recovery OR my device's bootloader is locked. As i reboot into recovery I get this error message
"Secure Booting Error
Cause:boot certification verify"