Cisco Asr 1000 Software Upgrade Procedure

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Varinia Swicegood

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Aug 3, 2024, 4:18:15 PM8/3/24

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After you login, go to enable mode, by entering the enable password. This example uses two cisco catalyst 3750 switches configured in stack mode as shown below. So, while upgrading you should upgrade the image on both the flash cards.

it will download/verify/redownload if need be, also will wait to delete the old image off the flash once the new image is verified non-corrupt (assuming there is room on the flash to hold a 2nd image, otherwise it will tell you there is not enough room)

Thanks man, i fu**** up my switch with the wrong IOS image 3750X (my fault) and the switch was not able to boot. so if anyone doing a force upgrade with the above method and found that switch or router is not booting up please follow the recovery procedure here:

Hi Ramesh,
I am trying to load downgrade version of IOS on Cisco 3750G-48TS-S. I am not able to do that. Infact i loaded 12.2(25) but its not working and whats i am finding there have to reload by previous version Boot Rom with IOS. Is that possible to load down garde version of the both Boot as well as IOS on Cisco 3750G-48TS-S?

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