Upgrading Cisco IOS

heres my noddy guide 🙂
ROUTER#copy tftp: flash:
Address or name of remote host []? 192.168.1.2
Source filename []? c870-advipservicesk9-mz.124-15.T2.bin
Destination filename [c870-advipservicesk9-mz.124-15.T2.bin]?
Accessing tftp://192.168.1.2/c870-advipservicesk9-mz.124-15.T2.bin…
Loading c870-advipservicesk9-mz.124-15.T2.bin from 192.168.1.2 (via BVI1): !
%Error copying tftp://192.168.1.2/c870-advipservicesk9-mz.124-15.T2.bin (Not enough space on device)

STEP 1: Check Config Register
ROUTER# Sh ver
Configuration register is 0x2102

STEP2 : Check Flash (IOS)
ROUTER#sh flash:
24576K bytes of processor board System flash (Intel Strataflash)

Directory of flash:/

2 -rwx 12104456 — — —- –:–:– —– c870-advsecurityk9-mz.124-4.T8.bin
3 -rwx 2254 Mar 1 2002 00:08:39 +00:00 sdmconfig-8xx.cfg
4 -rwx 861696 Mar 1 2002 00:08:57 +00:00 es.tar
5 -rwx 1164288 Mar 1 2002 00:09:18 +00:00 common.tar
6 -rwx 1038 Mar 1 2002 00:09:30 +00:00 home.shtml
7 -rwx 113152 Mar 1 2002 00:09:42 +00:00 home.tar
8 -rwx 1959936 Mar 1 2002 00:10:11 +00:00 wlanui.tar

23482368 bytes total (7264256 bytes free)

STEP3: Erase IOS From Flash
ROUTER#erase flash: ?
<cr>

ROUTER#erase flash:
Erasing the flash filesystem will remove all files! Continue? [confirm]y……………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………..
……………………………………………………………………………………………………………………..
……………………………………………………………………………………………………………………..
……………………………………………………………………………………………………………………..
……………………………………………………….
Erase of flash: complete

ROUTER#sh flash:
24576K bytes of processor board System flash (Intel Strataflash)

Directory of flash:/

No files in directory

23482368 bytes total (23478272 bytes free)

STEP4:Copy new IOS via TFTP
ROUTER#copy tftp: flash:
Address or name of remote host [192.168.1.2]?
Source filename [c870-advipservicesk9-mz.124-15.T2.bin]?
Destination filename [c870-advipservicesk9-mz.124-15.T2.bin]?
Accessing tftp://192.168.1.2/c870-advipservicesk9-mz.124-15.T2.bin…
Loading c870-advipservicesk9-mz.124-15.T2.bin from 192.168.1.2 (via BVI1):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[OK – 18835468 bytes]

18835468 bytes copied in 164.176 secs (114727 bytes/sec)
ROUTER#sh flash:
24576K bytes of processor board System flash (Intel Strataflash)

Directory of flash:/

2 -rwx 18835468 Mar 1 2002 04:53:22 +00:00 c870-advipservicesk9-mz.124-15.T2.bin

23482368 bytes total (4640768 bytes free)

STEP5: Configure Boot System Statement
ROUTER(config)#no boot system
ROUTER(config)#boot system flash c870-advsecurityk9-mz.124-4.T8.bin
ROUTER(config)#^Z
ROUTER#wr
Building configuration…
[OK]
ROUTER#reload

STEP6: Check IOS
ROUTER#sh version
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(15)T2, RELEASE SOFTWARE (fc7)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Fri 18-Jan-08 10:53 by prod_rel_team

ROM: System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE

ROUTER uptime is 1 minute
System returned to ROM by reload
System image file is “flash:c870-advipservicesk9-mz.124-15.T2.bin
Last reload reason: Reload Command

Configuration register is 0x2102
ROUTER#
ROUTER#
ROUTER#
ROUTER#

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