The Galaxy Z Fold 5, Galaxy Z Flip 5, Galaxy Z Fold 4, and Galaxy Z Flip 4 units in South Korea are receiving software updates that bring the July 2026 security patch, fixing 57 security vulnerabilities from previous firmware. According to Mohammed Khatri, these rollouts carry distinct firmware versions per device and are expected to expand globally within days.
Decoding the Firmware Versions Across Generations
The latest distributions target four distinct foldable variants simultaneously across South Korea.
The specific regional builds rolling out carry exact alphanumeric strings. According to current distribution logs, the Galaxy Z Fold 5 receives version F946NKSS6GZG3, while the Galaxy Z Flip 5 picks up F731NKSS6GZG4. The Galaxy Z Fold 4 is assigned version F936NKSS8IZG2, and the Galaxy Z Flip 4 secures build F721NKSS8IZG2.
Addressing 57 Vulnerabilities in Core Firmware
By addressing 57 distinct security issues present in earlier firmware, this patch makes these devices more secure.
Global Deployment and Manual Verification Protocol
Devices outside South Korea will inherit firmware builds ending with the exact same four-character string suffixes as regional distribution scales up over the coming days.
Once the package hits local carrier servers, devices will trigger an automated push notification. Users who prefer to bypass the automatic queue can check for the update manually by navigating to Settings > Software update > Check for updates.
Long-Term OS Support and Hardware Longevity
While the Galaxy Z Fold 5 and Galaxy Z Flip 5 remain eligible to receive Samsung’s upcoming Android skin, One UI 9.0 (Android 17), the Galaxy Z Fold 4 and Galaxy Z Flip 4 aren’t.
Owners of the foldables will continue to receive critical security maintenance.
