Upgrade Cisco IOS on the 877W
Yesterday it struck me I was using a less secure wireless setup while the more secure was just a simple configuration change away. While adjusting the configuration I noticed the software version was pretty dated because my last IOS update (12.4.24T1) was from May 2009. To stay current I decided to upgrade my home router.
12.4.24T8 is the latest IOS in the 12.4T series. This version was released on 19 September 2012. I don’t have enough flash capacity to store the new 15.1.4 release, so I will stick with the 12.4.24 release. So I downloaded c870-advipservicesk9-mz.124-24.T8.bin from Cisco.
I have described the steps below so it will be a walk in the park next time.
- Show current image:
router#show flash 24576K bytes of processor board System flash (Intel Strataflash) Directory of flash:/ 2 -rwx 21839140 Aug 9 2009 19:15:03 +02:00 c870-advipservicesk9-mz.124-24.T1.bin 4 -rwx 833024 Mar 1 2002 01:09:03 +01:00 es.tar 6 -rwx 1038 Mar 1 2002 01:09:35 +01:00 home.shtml 7 -rwx 102400 Mar 1 2002 01:09:46 +01:00 home.tar 9 -rwx 491213 Mar 1 2002 01:10:29 +01:00 128MB.sdf 10 -rwx 720 Aug 9 2009 14:51:55 +02:00 vlan.dat 23482368 bytes total (206848 bytes free) router#
- Backup current IOS:
router#copy flash:c870-advipservicesk9-mz.124-24.T1.bin scp://firstname.lastname@example.org: Address or name of remote host [22.214.171.124]? Destination username [username]? Destination filename [c870-advipservicesk9-mz.124-24.T1.bin]? Writing c870-advipservicesk9-mz.124-24.T1.bin Password: Sink: C0644 21839140 c870-advipservicesk9-mz.124-24.T1.bin !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- Delete current:
router#delete flash:c870-advipservicesk9-mz.124-24.T1.bin Delete filename [c870-advipservicesk9-mz.124-24.T1.bin]? Delete flash:/c870-advipservicesk9-mz.124-24.T1.bin? [confirm] router#
- Upload new:
router#copy scp://email@example.com:c870-advipservicesk9-mz.124-24.T8.bin flash: Address or name of remote host [126.96.36.199]? Source username [username]? Source filename [c870-advipservicesk9-mz.124-24.T8.bin]? Destination filename [c870-advipservicesk9-mz.124-24.T8.bin]? Password: Sending file modes: C0644 21910432 c870-advipservicesk9-mz.124-24.T8.bin !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
router#verify flash:c870-advipservicesk9-mz.124-24.T8.bin Verifying file integrity of flash:c870-advipservicesk9 mz.124-24.T8.bin.........
- Set startup image and reload:
router#conf t Enter configuration commands, one per line. End with CNTL/Z. router(config)#boot system flash:c870-advipservicesk9-mz.124-24.T8.bin router(config)#end router#write mem Building configuration... [OK] router#reload
Wait to let the system start up with the new image.