there should not be any step to unlock it no. are you in EXEC or Privileged EXEC level of the router?
when you logon you need to get to the priviledged level of the router (en). then you need to be in Configuratio Levelafetr that. (conf t)
have a look here for more on the iOS CLI command level to make changes.
http://www.cisco.com/warp/cpropub/45/tutorial.htm
hope that helps
Regards Simon
http://www.linksysinfo.org
Regards Simon