01-31-2025 04:57 AM
Hello
I neeed to upgrade 4331 from 16.6.9 with rommon 16.7(3r) to last ios versión 17.12.4a but I am not completed sure with the procederé...
I think is the following
1. Upgrade Rommon to 16.12(2r)
2. Upgrade IOS to 17.12.4a
Is this good? The licenses Will convert un Smart Automatically right adm keep being permanente?
01-31-2025 05:08 AM
Hello @mdrangell22
A direct upgrade from 16.6.x to 17.x.x is possible and may need a ROMMON upgrade.
Please follow @Leo Laohoo procedure: https://community.cisco.com/t5/networking-knowledge-base/cisco-isr-amp-asr-1k-routers-ios-xe-firmware-upgrade-install/ta-p/4426457
01-31-2025 01:16 PM
Hi @mdrangell22
Please check : https://community.cisco.com/t5/routing/isr-4331-upgrade-from-16-6-x-to-17-3-4a-universalk9-no-sd-wan/td-p/4472452
Regards,
Joshuqn Ismayiov
02-08-2025 10:38 PM
1. ROMMON upgrade mandatory. Failure to upgrade the ROMMON will cause the router to go into a boot-crash-loop.
2. It is NOT POSSIBLE to upgrade directly, from 16.X.X, to 17.12.X without going through an intermediate version like 17.6.X or 17.9.X. (NOTE: This information is not freely available to anyone.) Failure to heed this warning will cause the router to go into a boot-crash-loop.
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