Cisco 2800 Series Manual page 257

Upgrading the System Image
no boot system
Step 3
Use this command to delete all entries in the bootable image list, which specifies the order in which the
router attempts to load the system images at the next system reload or power cycle:
Router(config)# no boot system
If the new system image is the first file or the only file displayed in the dir flash: command output, you
Step 4
do not need to perform the following step.
boot system flash: system-image-filename
Use this command to load the new system image after the next system reload or power cycle. For
example:
Router(config)# boot system flash: c2600-i-mz.121-14.bin
Step 5 (Optional) Repeat to specify the order in which the router should attempt to load any backup system
images.
Step 6 exit
Use this command to exit global configuration mode:
Router(config)# exit
Router#
show version
Step 7
Use this command to display the configuration register setting:
Router# show version
Cisco Internetwork Operating System Software
.
.
.
Configuration register is 0x0
Router#
Step 8 If the last digit in the configuration register is 0 or 1, proceed to
configuration register is between 2 and F, proceed to
configure terminal
Step 9
Use this command to enter global configuration mode:
Router# configure terminal
Router(config)#
Step 10 config-register 0x2102
Use this command to set the configuration register so that, after the next system reload or power cycle,
the router loads a system image from the boot system commands in the startup configuration file:
Router(config)# config-register 0x2102
Step 11 exit
Use this command to exit global configuration mode:
Router(config)# exit
Router#
How to Upgrade the System Image
Step 9. However, if the last digit in the
Step 12.
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