I have an ISR4331 running IOS 17.3.4a and Rommon 17.6.2. Now I want to downgrade it to the 16.9 version, but I downloaded several 16.9 IOS, which do not match when verifying the hash value. What's the reason?
Should I need to downgrade the rommon version first? However, this link indicates that the Rommon version cannot be downgraded to the old version since 17.6.1.
Does anyone have any good suggestions
Thanks,but the link I post said that can not downgrade to old rommin versions.
Let me put this way, ROMMON Downgrade not possible if the device shipped latest version, that will break the system
Iif you have only issue with License, PAK License can be converted in to smart License contract License team
ROMMON Version 17.6.1 is compatible with Cisco IOS XE Releases 16.9 and later.