LUMIX G LEICA DG VARIO-ELMAR 100-400mm F4.0-6.3 ASPH. Firmware 1.2 Issues Addressed:Improved the performance of O.I.S.(Optical Image Stabilizer). Release Date:3-8-2017 Operating Systems:windows/mac Install Instructions here Download here LUMIX G LEICA DG VARIO-ELMAR 100-400mm B&H Photo / Amazon / Adorama Related posts: Firmware Update: Panasonic Lumix G Leica 12-60MM F2.8-4.0 ASPH. DG Vario-Elmarit Panasonic LEICA DG … Continue reading LUMIX G LEICA DG VARIO-ELMAR 100-400mm F4.0-6.3 ASPH. Firmware Update