Lumix Simple Viewer has been upgraded to new software called PHOTOfunStudio which handles Lumix cameras extremely well and you will be able to export your pictures to computer storage. PHOTOfunStudio is available in many versions and for you product you will need version 8.1 PE
which has been specifically developed for your device.
In order to copy pictures from your device, you should put it in USB Mode. The software automatically detects your camera and makes it available for download operations.