Even before Google and other mobile brands, Samsung has begun rolling out the May 2021 Security Patch update to the Galaxy S21. Moreover, it also needed to note that it is still the end of April month. This shows how Samsung is working effectively to complete its promises. Getting back to the update, it holds the firmware version G99xBXXU3AUDA, weighs 1.2GB in size, and as of now, it is taking place in Europe. We can expect the wider release shortly.