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How to upgrade to CISCO IOS 12.1

rpgccie
Beginner
Beginner

hi can anyone guide me to replace an old ios image in a 1. read only and

2. read/write flash

in 2500 and 2600 routers

the problem is ive got some old ios runnin in them .. so i need the proper method to replace it with this new image . Thankyou..

3 Replies 3

jsivulka
Contributor
Contributor

The procedure to upgrade the IOS in a 2500 is as described at http://www.cisco.com/en/US/partner/products/hw/iad/ps497/products_tech_note09186a0080110d2c.shtml.

For the 2600, refer to

http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1831/products_tech_note09186a00800f81f9.shtml

You could also refer to the technical documentation for more version specific upgrade details.

http://www.cisco.com/univercd/home/home.htm

im sorry but i dont have a cco login id :(

can anyone help..

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