Samsung Galaxy Z Fold 5, Fold 4, Flip 5, Flip 4 Receive March 2026 Security Update
Samsung has initiated a new software rollout for its recent generation of foldable smartphones, delivering enhanced security to users of the Galaxy Z Fold 5, Galaxy Z Fold 4, Galaxy Z Flip 5, and Galaxy Z Flip 4. The update centers on the March 2026 Android security patch, a critical maintenance release designed to fortify device defenses.
Update Details and Initial Rollout
The update is currently being distributed in Samsung's home market of South Korea. This initial regional release is a standard practice for the company, typically followed by a broader global rollout within days. The firmware versions associated with this update for the Korean models are:
- Galaxy Z Fold 5: F946NKSS6FZC1
- Galaxy Z Flip 5: F731NKSS6FZC1
- Galaxy Z Fold 4: F936NKSS7IZC1
- Galaxy Z Flip 4: F721NKSS7IZC1
Users in other regions can expect to receive notification of the update on their devices shortly. The primary function of this release is to implement the latest security patch from Google, which addresses a total of 65 vulnerabilities discovered in the Android operating system. By closing these security gaps, Samsung ensures these premium devices remain protected against potential exploits.
Security Enhancements and Future Software
The March 2026 security patch is a vital component of ongoing device support, patching vulnerabilities that could affect the core system, framework, and kernel components. Regular security updates are a cornerstone of maintaining user trust and device integrity in the long term, especially for flagship products like these foldables.
Looking ahead, all four of these foldable models are also slated to receive a more significant software upgrade. They are on the eligibility list for Samsung's upcoming One UI 8.5 update, which is based on Android 16 QPR2. One UI 8.5 is expected to introduce a refreshed user interface and new features, with a rollout anticipated to begin for eligible devices in the coming weeks. This positions the Galaxy Z Fold 4, Flip 4, Fold 5, and Flip 5 to receive both immediate security hardening and a forthcoming feature-rich update, extending their software lifecycle and value.
Conclusion
The deployment of the March 2026 security update to Samsung's 2022 and 2023 foldable lineup underscores the company's commitment to supporting its premium devices with timely security maintenance. For owners of the Galaxy Z Fold 5, Fold 4, Flip 5, and Flip 4, this update is a recommended installation to ensure optimal device security. With the promise of the One UI 8.5 update on the horizon, software support for these innovative form factors continues to be a priority, blending essential protection with planned enhancements.