5-9
Hardware Installation Guide for the Cisco 4000 Series  Integrated Services Router
OL-32185-02
Chapter 5      ROM Monitor Overview and Basic Procedures
  Exiting ROM Monitor Mode
Configuration Example
rommon 3 > confreg
           Configuration Summary
   (Virtual Configuration Register: 0x0)
enabled are:
 [ 0 ] break/abort has effect
 [ 1 ] console baud: 9600
 boot: ...... the ROM Monitor
do you wish to change the configuration? y/n  [n]:  y
 enable  "diagnostic mode"? y/n  [n]:  
 enable  "use net in IP bcast address"? y/n  [n]:  
 enable  "load rom after netboot fails"? y/n  [n]:  
 enable  "use all zero broadcast"? y/n  [n]:  
 disable "break/abort has effect"? y/n  [n]:  
 enable  "ignore system config info"? y/n  [n]:  
 change console baud rate? y/n  [n]:  
change the boot characteristics? y/n  [n]:  
           Configuration Summary
   (Virtual Configuration Register: 0x0)
enabled are:
 [ 0 ] break/abort has effect
 [ 1 ] console baud: 9600
 boot: ...... the ROM Monitor
do you wish to change the configuration? y/n  [n]:  
Upgrading the ROMmon for a Router
Use this procedure to upgrade the ROMmon on a router:
Step 1 (Optional) Run the show platform command or the show rom-monitor slot command on the router to 
see the current release numbers of ROMmon on the hardware. See the “Checking the Current ROMmon 
Version” section on page 5-2 for information about interpreting the output of the command that you run.
Step 2 If the ROMmon image has not been copied onto the router, copy the PKG file that is made available as 
part of this ROMmon release onto the bootflash: or usb[0-1]: file system using the copy source-location 
destination-location command. For example, if you are upgrading to Release 15.2(1r)S, copy the 
isr4400-rommon-154-3r.S.pkg file.
Step 3 Run the dir file-system command to verify that the ROMmon file is copied into the specified directory.
Step 4 Run the upgrade rom-monitor filename location all command to begin the ROMmon image upgrade, 
where location is the path to the ROMmon file.
Caution Do not remove hardware, turn off power, or interrupt the router in any way during the ROMmon upgrade. 
Although the router should be able to recover from most interruptions during the ROMmon upgrade, 
certain scenarios may cause unpredictable problems.