You could either upgrade the stack and the new nodes and then add the new nodes or add the new nodes to the stack and upgrade all of them at the same time. You can't mixe code versions within a stack.
Make sure that the new version of code is in the same image container on all of the switches. I.e. All on primary or all on secondary.
Let me know if I didn't answer your question
in the scenario that I'm logon to the master, when I upgrade its image does the rest of the node will be upgraded also? can you share what command should I execute? what I know only is the per node image upgrade "download image <hostname><filename> vr vr-default <partition>"
here is my scenario, I have several stacking with 15.2 image version, and some node in a stack needs to be replaced and some will stay. thus, I'm planning to upgrade the stack images to 15.3.2 (as this was the images of the newly delivered switches) before performing the node replacement. just making sure that I will be doing it right!
thanks in advance...
After the switch downloads the code it will ask you to load it say yes that sets the new image container to be the next one used on a reboot.
You then need to reboot the switch for it to be active. You can use the reboot command to reboot right away or build out that command to reboot at a particular time.
Hope that helps.