C3900-universalk9-mz.spa.157-3.m8.bin Jun 2026

Once the router restarts, verify the active version using show version . Lifecycle and Support Considerations

Next-generation traffic recognition (NBAR2) for granular bandwidth management. Platform Hardware Compatibility C3900-universalk9-mz.spa.157-3.m8.bin

boot-start-marker. boot system flash flash:c3900-universalk9-mz.SPA.154-3.M3.bin. boot-end-marker. Cisco Community Cross Platform Release Notes for Cisco IOS Release 15.7(3)M Once the router restarts, verify the active version

What of the 3900 series you are updating (e.g., 3925, 3945)? Once the router restarts