Samsung has begun rolling out its latest Android 5.1.1 Lollipop software for the Galaxy Note 4. The update brings significant performance improvements and security fixes, but users will have to wait longer for a Stagefright patch.

Users in Poland, with the SM-N910C variant of the Galaxy Note 4, are seeing the update first — but providing Samsung doesn’t run into any problems, it will continue to rollout to other countries across Europe and the rest of the world in the coming weeks.

Most of the changes in Android 5.1.1 are under the hood, which means Note 4 owners can expect better performance and increased stability. Many users also report better battery life, more efficient memory management, and a new feature called Smart Manager, which provides a brief overview of battery, storage, and RAM status.

Unfortunately, this update does not bring a fix for the worrying Stagefright vulnerability in Android, so Galaxy Note 4 owners are going to have to wait longer for that.

When Android 5.1.1 is ready for your Note 4, you’ll get a notification prompting you to download it. However, you can search for the software manually within the software update section of the Settings app, or via Samsung’s Kies application for Mac and PC.