Sony releases a firmware 3.20 for the Sony A7II and A7sII adding support for the new Sony radio flash system. You can download the firmwares below: A7II for Apple or Windows A7sII for Apple or Windows Related posts: Sony Gets Serious About Wireless High Speed Sync Lonely Speck Reviews The Zeiss FE 55mm f/1.8 Sony ASe7ens Lens Rentals … Continue reading Sony Radio Flash Support Added to Sony a7 II and a7S II