Hi @Noah014 , very little time. The AP will upgrade whilst still actively serving clients then it will reload. During that period it will drop off then reconnect once registered out to the cloud again. Approx 1-2 minutes
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.