I am having 20 AP (R650) connected in unleashed network by making one deivce as a master. All devices are currently running with 200.12.10.105.100 firmware. Kindly advice it will be fine to upgrade devices if so which firmware will work.
I am running fine on 200.16.7.0.402. Looks like you haven’t upgraded for a very long time so make sure you backup your config in case the upgrade goes poorly and you need to roll back.
