LLC might only be available with the somewhat more expensive models.
Contact ASRock tech support online ASRock > Support Request Form and ask if there is a beta or final bios for your motherboard that supports LLC.
You risk bricking your motherboard if you flash it with a bios version that is not meant for your board.
A possible option that might not brick your board is to buy a pre-flashed bios chip for a similar model that supports LLC.
You need to confirm that your motherboard has a removable bios chip.
LLC might not be needed with a "modest" ~4.2GHz overclock instead of trying for 4.5GHz or higher.
You might be able to buy a pre-flashed bios chip online or possibly from ASRock.
Obviously the new bios chip needs to be pin compatible with the bios socket on your board.
We can best help you after you create a detailed hardware list in the PC Specs portion of your forum profile http://forums.tweaktown.com/profile.php?do=editprofile at the bottom of the profile page or in your forum signature http://forums.tweaktown.com/profile....=editsignature.
You should provide all your hardware details when you fill out the ASRock tech support form.
Let us know what you find out.