LG F100L/S Jellybean Upgrade, Root, Khmer Unicode and Clockwork Mod

Khmer version, click here.
UPDATE: Link is repaired. Thanks for the feedback. If you find dead link, please comment to let me know.

LG F100

For LG Optimus Vu F100L or S only. F100L is a Korean variant, and S is international variant. Your phone must have a battery that may last 1 hour or at least 20%. Rooting and changing system file void your warranty. I tested this on my LG Vu F100L and got success even on a repeated demo. However, I do not have guarantee for your phone if it bricks. Do it at your own risk. Anyway, if you do just exactly as I write here, I believe you will succeed.

UPDATE: If you already on official Jellybean 4.1.2, you can skip the upgrade and go straight to root.