For security reasons I would like to upgrading my Cisco 3825 router from 12.4(13r)T to 15.1.4M12a. Does 15.1.4M12a have any dependencies going from 12.4 to 15.1? Or can I upgrade directly?
@Joseph W. Doherty wrote:
In the later 2800 (and 3800?) series, for example, support was added for booting from USB sticks.
Requires a ROMmon upgrade to enable boot using USB.