IOS Upgrade of C2960S-48FPS-L (from 12.2(55)SE12 to 152-2.E9)

[Alan.A]

Anyone tried upgrading 2960S from 12.5(55)SE12 to Cisco goldstar version 152-2.E9? Any issue with the upgrades for stack switches?

[Leo Laohoo · Accepted solution]

I have a large fleet of 2960S on 15.2(2)E9 and there is nothing wrong.  

I have no failure when upgrading from 12.2(55)SE train to 15.2(2)E train. 

NOTE: 

1. Upgrading from 12.2(55)SE train to 15.2(2)E train is a major upgrade "step" -- This means there will be a mandatory micro-code upgrade and this will take between 12 to 22 minutes.  
2. Always use the "archive download-sw" script to properly unpack the files to the target switch.  Do not use the so-called "copy the BIN file from one switch to another" method because this is not "safe".

[balaji.bandi]

what is the reason for an upgrade, any security concerns, or improvement? the kit it end of the life last year 2020 - do you have any support extended.

If you planning to upgrade the hardware, I will leave it running as expected and move to a new model with the latest stable release.

still like to upgrade - read the release notes before upgrading closely :

https://www.cisco.com/c/en/us/support/ios-nx-os-software/ios-15-2e/products-release-notes-list.html