The dilemma is the following. I'd like to upgrade firmware on my EAP225s to 5.0. They use the same SSIDs and their radio transmit power is such that many IoT devices can see both albeit at different strengths. I'm concerned that while one is being upgraded, a device may associate with the AP that is further away and not change over even once the stronger one is back up.

Is there a best practice that does not require manually having every client device re-associate?

Thanks