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How to upgrade to CISCO IOS 12.1

rpgccie
Level 1
Level 1

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
Level 5
Level 5