Samsung has officially rolled out the May 2025 security update for the Galaxy S24 series. This is the latest update, which is currently being released first in Korea and will soon expand to other markets.
This update is for three models of the Galaxy S24, Galaxy S24+, and Galaxy S24 Ultra, respectively, with software numbers S921NKSS4BYDF, S926NKSS4BYDF, and S928NKSS4BYDF.
Although it does not bring any notable new features, the May security patch focuses on improving safety and optimizing system performance. Samsung said that the update integrates patches from both Google and the manufacturer to fix a series of security vulnerabilities, thereby ensuring a safer and more stable user experience.
In parallel, the update also improves system stability and enhances reliability during use. Performance optimizations are applied to help your device run smoother and more efficiently in everyday tasks.
If you are using a Galaxy S24, check Settings > Software update to download and install the latest update when it is available.
SamFw

