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 starteted
- 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