Press release:
“Panasonic is pleased to announce that a new firmware is released for the Lumix G interchangeable lens LUMIX G VARIO 45-200mm / F4.0-5.6 / MEGA O.I.S. (H-FS045200). Â The firmware includes improvement of auto focus performance in AFC mode for taking photos. It also enhances performance of auto focusing and stability of O.I.S.(Optical Image Stabilizer) while reducing noise of aperture control for taking movies(Except for FHD mode of AVCHD in DMC-GH1).”
Download the firmware: