am using cisco 871 router. c870-advsecurityk9-mz.124-24.T1.bin presently used ios, i have few doubts
1. can I update my image to the latest version in this router ?
2. where should i find the ios , i searched a lot unable to find any image ?
3. please provide a link for downloading if you have ?
First, you need determine which IOS is suitable for this router - try cisco feature navigator.
Second - 871 is end-of-sale and end-of-support. Therefore, you will not be able to download the desired image on the Cisco website. But it can be found on the internet...
What @Joseph W. Doherty said is correct.
You need a valid Service Contract to download the IOS. Unfortunately, the 870-series router is already end-of-support. This means all relevant firmware files have been removed from the Cisco download pages.
If you have the exact filename of the file you are looking for, Google will be your friend.
Check for a valid service contract from where you bought it. Or call directly to Cisco TAC number which you can find online.