I upgraded the Cisco ISR 2821 with IOS c2800nm-advsecurityk9-mz.124-5. My old image is c2800nm-advsecurityk9-mz.124-3a After the upgrade, I reloaded the system. After that, router is not booting up. I see the message like below:
System Bootstrap, Version 12.3(8r)T7, RELEASE SOFTWARE (fc1)
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...