Cisco Cisco IOS Software Release 12.2(10)

When you upgrade from Release 12.1(3)DA or earlier images on the NI-2 card to Release 12.1(5)DA1, 
we recommend that you upgrade the bootflash image on the NI-2 card to the 12.1(5)DA1 dboot image.

To upgrade the dboot image in bootflash, perform the following steps:

DSLAM# copy 

//tftpserver:TFTPBOOT/ni2

Copy the boot image from a TFTP server to the bootflash.

DSLAM# reload

Reload the system to upgrade the image.

DSLAM> enable

Password: <password>

DSLAM#

Enter enable mode.

Enter the password.

You have entered enable mode when the prompt 
changes to DSLAM#.

DSLAM# delete bootflash:filename

Make room in the bootflash by deleting the name of the 
current boot image.

DSLAM# squeeze bootflash

Recover available space in bootflash using the squeeze 
bootflash command.

DSLAM# copy tftp://[server name] 

Copy the boot image to the bootflash.

DSLAM# show version

Record the current value of the config-register that 
appears on the last line of the show version display.

DSLAM# configure terminal

Enter global configuration mode. You have entered 
global configuration mode when the prompt changes to 

DSLAM(config)#

.

DSLAM(config)# config-register 0

Set the config register to 0x0000 so that the NI-2 
reboots in the ROM monitor.

DSLAM(config)# exit

Exit global configuration mode.

DSLAM# copy running-config 

Save the running configuration.

DSLAM# reload

Reset the system.

rommon> set

If you see BOOTLDR after you enter this command, the 
image in bootflash is already being used as the 
bootstrap image; go to Step 15. Otherwise, go to Step 
12 and enter the commands in Steps 12 through 14 to 
force the system to use ni2-dboot-mz.121-5.bin as the 
bootstrap image.

rommon> unset BOOTLDR

Unset BOOTLDR to remove the variable.