Although this feature has been around for 2 months for our European readers, this update is finally available over Zune update for the Asian users of the LG Optimus 7.
This new update, when prompted by Zune is a LG update. The firmware version remains the same as 7.10.8107.79 but the radio version is upgraded 1.0.7.10.
Below are screen shots of the LG Optimus 7 setup screen for the internet sharing option.