I have two C3850 switches, in stacking mode. The current ISO version is 16.3.6, BUNDLE mode, and I need to upgrade to 16.6.9 version install mode. How can I do this?
1. Do I need to switch from 16.3.6 BUNDLE mode to install mode and then upgrade to 16.6.9?
2. Can I upgrade directly from 16.3.6 BUNDLE mode to 16.6.9 install mode?
3. In addition, I would like to ask if I can upgrade each device one by one in a stacking network, so that it will not affect the existing network services.
In this video, you will find see the process to change switch IOS version from bundle to Install mode. For any query, please drop a comment below and will answer it asap.
