Cisco 2811 Router IOS 15 firmware upgrade
| Select the appropriate IOS 15 version according to your CF card size and memory option: |
| Boot up the system with an already working CF Card. If you do not have a working CF Card installed please follow the procedure howto transfer image with Xmodem |
| When the Cisco 2811 up and running, you can replace the CF card to larger one if needed according to the IOS 15 upgrade guide. |
| ena |
| get admin privileges |
| format flash: |
| format the newly replaced flash card, ensure that system is able to see/write |
| conf t |
| enter into configuration mode |
| int FastEthernet0/0 |
| enter into port configuration of Ethernet port which is directly connected with the TFTP server |
| ip address 192.168.1.2 255.255.255.0 |
| setup IP address on Router side, ensure that Router and PC can reach/ping each other, for example Windows Firewall should be turned off for the TFTP transfer. |
| no shut |
| port up |
| exit |
| copy tftp: flash: |
| start the TFTP copy process |
| show flash: |
| list the flash content |
| verify flash:c2800nm-adventerprisek9-mz.151-4.M8.bin |
| ensure that the copied image will be usable by the System – checking hash |
| conf t |
| enter into configuration mode |
| boot system flash:c2800nm-adventerprisek9-mz.151-4.M8.bin |
| setup the proper boot image name with the proper URL – the same URL that was checked by the verify command! |
| exit |
| wr |
| write configuration |
| reload |
| reboot the system |