The files needed to update the firmware have been uploaded online to be downloaded by the user. To check the availability of update, ones can simply go to settings > about phone > hardware info and look up the model number.
If it is still not successful, the files are also available in the official firmware to flash on your handset yourself.
In order to work in your gadget, you can install by using Odin to find the necessary instructions on the download page.
If you use another model of Samsung gadget, please note that it may be not compatible with this update. Thus, it may cause a boot loop in your gadget. It is recommended that you avoid flashing firmware designed for different models of the same handset.
It is important to note that the Galaxy S6 SM-G920F is the international model of Samsung current gadget. As the current model of Samsung corporation, The Galaxy S6 SM-G920F will be deployed not only in France and Europe.