1.) Reset Password / Config

• Connect to the router via Serial Cable
• Power on the router, but send a break during the first 60 seconds of boot time to get to the rommon CLI
• enter confreg 0x2142 followed by a reset
• Router is booting up, as soon as it does enter the system configuration dialog, answer the question with no
• enable
• conf t
• config-register 0x2102
• exit
• wr mem (because I just want to overwrite the old config :)!)

2.) ROMMON Upgrade

• Get the latest / needed ROMMON upgrade from Cisco
• Copy it i.e. to your CF card via Card Reader, TFTP or other means
• Boot up the router and enter privleged / enable mode
• Enter the upgrade command: upgrade rom-monitor file flash:<Filename>
• Answer yes to get the process started
• After the upgrade the router will reload

3.) Software Upgrade

• Get the latest/needed image from Cisco
• Just copy it to the CF card via Card Reader, TFTP or other means
• Reload