Samsung has released a new software update G920FXXU5EQK4 for Galaxy S6 smartphone. The latest patch rolling out with Android November Security patch.
Android November Security patch which addresses Common Vulnerabilities and Exposures (CVE) in the open-source Android OS. Additionally, there are minor bug fixes and improvements to the smartphone.
Software update G920FXXU5EQK4 for Galaxy S6 will gradually release to everyone. You can also check manually for updates, go to Settings > About device > System update.
Make sure you have enough charge on your device at least 60% to 70% before downloading the update.